has particulars: backspace, backspace key, backspacer, command key, control key, return, return key, shift, shift key, space bar, tab, tab key, telegraph key

is a member of keyboard

is a kind of lever

Verb key has 5 senses

key(v = verb.cognition) describe, discover, distinguish, identify, key out, name - identify as in botany or biology, for example;

Sample sentences:
Somebody ----s something
Somebody ----s somebody
Something ----s something

key(v = verb.possession) - provide with a key; "We were keyed after the locks were changed in the building"

Derived form noun key₁

Sample sentence:
Somebody ----s somebody

key(v = verb.contact) - vandalize a car by scratching the sides with a key; "His new Mercedes was keyed last night in the parking lot"

is one way to

vandalise

vandalize

Derived form noun key₁

Sample sentence:
Somebody ----s something

key(v = verb.change) - regulate the musical pitch of;

Derived forms noun key₃, noun key₄

Sample sentence:
Somebody ----s something PP

key(v = verb.change) - harmonize with or adjust to; "key one's actions to the voters' prevailing attitude"

Sample sentence:
Somebody ----s somebody PP

Adjective key has 1 sense

key(s = adj.all) cardinal, central, fundamental, primal - serving as an essential component; "a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure"

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CIDE DICTIONARY

key, n. [OE. keye, key, kay, AS. c.].

An instrument by means of which the bolt of a lock is shot or drawn; usually, a removable metal instrument fitted to the mechanism of a particular lock and operated by turning in its place. [1913 Webster]

A small device which is inserted into a mechanism and turned like a key to fasten, adjust, or wind it; as, a watch key; a bed key; the winding key for a clock, etc. [1913 Webster]

One of a set of small movable parts on an instrument or machine which, by being depressed, serves as the means of operating it; the complete set of keys is usually called the keyboard; as, the keys of a piano, an organ, an accordion, a computer keyboard, or of a typewriter. The keys may operate parts of the instrument by a mechanical action, as on a piano, or by closing an electrical circuit, as on a computer keyboard. See also senses 12 and 13. [1913 Webster]

A position or condition which affords entrance, control, pr possession, etc.; as, the key of a line of defense; the key of a country; the key of a political situation. [1913 Webster]
"Those who are accustomed to reason have got the true key of books." [1913 Webster]

"Who keeps the keys of all the creeds." [1913 Webster]

That part of a mechanism which serves to lock up, make fast, or adjust to position. [1913 Webster]

A piece of wood used as a wedge. [1913 Webster]

A keystone. [1913 Webster]

A wedge to unite two or more pieces, or adjust their relative position; a cotter; a forelock. [1913 Webster]

An indehiscent, one-seeded fruit furnished with a wing, as the fruit of the ash and maple; a samara; -- called also key fruit. [1913 Webster]

A family of tones whose regular members are called diatonic tones, and named key tone (or tonic) or one (or eight), mediant or three, dominant or five, subdominant or four, submediant or six, supertonic or two, and subtonic or seven. Chromatic tones are temporary members of a key, under such names as “ sharp four,” “flat seven,” etc. Scales and tunes of every variety are made from the tones of a key. [1913 Webster]
"Both warbling of one song, both in one key." [1913 Webster]

Fig: The general pitch or tone of a sentence or utterance. [1913 Webster]
"You fall at once into a lower key." [1913 Webster]

A metallic lever by which the circuit of the sending or transmitting part of a station equipment may be easily and rapidly opened and closed; as, a telegraph key. [Webster 1913 Suppl.]

any device for closing or opening an electric circuit, especially as part of a keyboard, as that used at a computer terminal or teletype terminal. [PJC]

A simplified version or analysis which accompanies something as a clue to its explanation, a book or table containing the solutions to problems, ciphers, allegories, or the like; [Webster 1913 Suppl.]

A word or other combination of symbols which serves as an index identifying and pointing to a particular record, file, or location which can be retrieved and displayed by a computer program; as, a database using multi-word keys. When the key is a word, it is also called a keyword. [PJC]

Key bed. Same as Key seat. -- Key bolt, a bolt which has a mortise near the end, and is secured by a cotter or wedge instead of a nut. Key bugle. See Kent bugle. -- Key of a position or Key of a country. (Mil.) See Key, 4. -- Key seat (Mach.), a bed or groove to receive a key which prevents one part from turning on the other. -- Key way, a channel for a key, in the hole of a piece which is keyed to a shaft; an internal key seat; -- called also key seat. -- Key wrench (Mach.), an adjustable wrench in which the movable jaw is made fast by a key. -- Power of the keys (Eccl.), the authority claimed by the ministry in some Christian churches to administer the discipline of the church, and to grant or withhold its privileges; -- so called from the declaration of Christ, “I will give unto thee the keys of the kingdom of heaven.” Matt. xvi. 19.

key, v. t.

To fasten or secure firmly; to fasten or tighten with keys or wedges. Francis. [1913 Webster]

To enter (text, data) using keys, especially those on a keyboard; to keyboard; as, to key the data in by hand. [PJC]

To adjust so as to be maximally effective in a particular situation; -- of actions, plans, or speech; as, to key one's campaign speech to each local audience. [PJC]

To furnish with a key or keys. [PJC]

To key up. (a) (Arch.) To raise (the whole ring of an arch) off its centering, by driving in the keystone forcibly. (b) (Mus.) To raise the pitch of. (c) Hence, (fig.), to produce nervous tension in; as, the whole team was keyed up for the championship game.

key, a.

Essential; most important; as, the key fact in the inquiry; the president was the key player inthe negotiations. [PJC]

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OXFORD DICTIONARY

key, n. & v.
--n. (pl. keys)
1 an instrument, usu. of metal, for moving the bolt of a lock forwards or backwards to lock or unlock.
2 a similar implement for operating a switch in the form of a lock.
3 an instrument for grasping screws, pegs, nuts, etc., esp. one for winding a clock etc.
4 a lever depressed by the finger in playing the organ, piano, flute, concertina, etc.
5 (often in pl.) each of several buttons for operating a typewriter, word processor, or computer terminal, etc.
6 what gives or precludes the opportunity for or access to something.
7 (attrib.) essential; of vital importance (the key element in the problem).
8 a place that by its position gives control of a sea, territory, etc.
9 a a solution or explanation. b a word or system for solving a cipher or code. c an explanatory list of symbols used in a map, table, etc. d a book of solutions to mathematical problems etc. e a literal translation of a book written in a foreign language. f the first move in a chess-problem solution.
10 Mus. a system of notes definitely related to each other, based on a particular note, and predominating in a piece of music (a study in the key of C major).
11 a tone or style of thought or expression.
12 a piece of wood or metal inserted between others to secure them.
13 the part of a first coat of wall plaster that passes between the laths and so secures the rest.
14 the roughness of a surface, helping the adhesion of plaster etc.
15 the samara of a sycamore etc.
16 a mechanical device for making or breaking an electric circuit, e.g. in telegraphy.
--v.tr. (keys, keyed)
1 (foll. by in, on, etc.) fasten with a pin, wedge, bolt, etc.
2 (often foll. by in) enter (data) by means of a keyboard.
3 roughen (a surface) to help the adhesion of plaster etc.
4 (foll. by to) align or link (one thing to another).
5 regulate the pitch of the strings of (a violin etc.).
6 word (an advertisement in a particular periodical) so that answers to it can be identified (usu. by varying the form of address given).

Idiom

key industry an industry essential to the carrying on of others, e.g. coal-mining, dyeing. key map a map in bare outline, to simplify the use of a full map. key money Brit. a payment demanded from an incoming tenant for the provision of a key to the premises. key-ring a ring for keeping keys on. key signature Mus. any of several combinations of sharps or flats after the clef at the beginning of each staff indicating the key of a composition. key up (often foll. by to, or to + infin.) make (a person) nervous or tense; excite.

Derivative

keyer n. keyless adj.

key, n. a low-lying island or reef, esp. in the W. Indies (cf. CAY).

Etymology

Sp. cayo shoal, reef, infl. by QUAY

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THESAURUS

key
French pitch, Rasputin, Svengali, TelAutography, Teletype, Teletype network, Teletyping, VIP, access, accommodate, accord, achromatism, adapt, adjust, adjust to, aerophone, ait, amplification, archipelago, assimilate, atoll, attune, axial, bad influence, bang, bar, barricade, batten, batten down, bell, big wheel, bilingual text, bolt, bottle opener, button, button up, can opener, cast, catchword, cay, centermost, central, centralized, centric, centroidal, centrosymmetric, choke, choke off, chromatism, chromism, church key, clap, clarification, classical pitch, clavis, close, close up, closed-circuit telegraphy, clue, code, color, color balance, color harmony, color scheme, coloration, coloring, complexion, concentrated, constrict, contain, continental island, contract, coordinate, coral head, coral island, coral reef, corkscrew, court, cover, crib, critical, crucial, cue, cue word, cut to, decipherment, decoding, decorator color, depth, description, dominant, double reed, duplex telegraphy, electricity, embouchure, eminence grise, equalize, essential, evidence, explanation, explication, facsimile telegraph, faithful translation, fasten, fit, five-percenter, fix, fold, fold up, free translation, frequency, friend at court, gear to, geocentric, gloss, glossary, good influence, gray eminence, guide, harmonize, heavyweight, height, hidden hand, high pitch, hint, holm, homologate, homologize, horn, hot lead, hue, humor, important, indication, indicator, influence, influence peddler, influencer, ingroup, insularity, interlinear, interlinear translation, interrupter, intimation, island, island group, islandology, isle, islet, key signature, key to, key word, keynote, kingmaker, latch, latchkey, latchstring, lead, legend, level, lip, lobby, lobbyist, lock, lock out, lock up, loose translation, lords of creation, low pitch, main, major, major key, make plumb, make uniform, man of influence, manipulator, master key, measure, mediant, metaphrase, middle, middlemost, midmost, minor, mood, mouthpiece, multiplex telegraphy, natural color, necessary, new philharmonic pitch, news ticker, note, occlude, oceanic island, omphalic, open sesame, opener, padlock, pallor, paraphrase, passkey, password, pedal point, philharmonic pitch, philosophical pitch, pipe, pitch, pivotal, plumb, pony, powers that be, pressure group, proportion, put in tune, quadruplex telegraphy, railroad telegraphy, receiver, reconcile, rectify, reed, reef, register, regulate, restatement, rewording, right, sandbank, sandbar, scent, seal, seal off, seal up, secure, sender, set, set right, shade, shut, shut the door, shut up, similarize, simplex telegraphy, single-current telegraphy, sinister influence, skeleton key, skin color, slam, slide, snap, sounder, special interests, special-interest group, spoor, squeeze shut, standard pitch, stock ticker, strangle, style, subdominant, submarine telegraphy, submediant, subtonic, suggestion, supertonic, sync, synchronize, tailor, telegraphics, telegraphy, teleprinter, teletypewriter, teletypewriting, telex, telltale, tenor, the Establishment, ticker, ticket, timbre, tin opener, tinct, tincture, tinge, tint, tip-off, tonality, tone, tonic, tonic key, tooter, trace, transcription, translation, transliteration, transmitter, trim to, trot, true, true up, tune, typotelegraph, typotelegraphy, umbilical, undercolor, valve, very important person, vestige, vital, wheeler-dealer, whiff, wind, wind instrument, wire service, wire-puller, zip up, zipper

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ROGET THESAURUS

key

Instrumentality
N instrumentality, aid, subservience, subserviency, mediation, intervention, medium, intermedium, vehicle, hand, agency, minister, handmaid, midwife, accoucheur, accoucheuse, obstetrician, gobetween, cat's-paw, stepping-stone, opener, key, master key, passkey, latchkey, open sesame, passport, passe-partout, safe-conduct, password, instrument, expedient, means, instrumental, useful, ministerial, subservient, mediatorial, intermediate, intervening, conducive, through, by, per, whereby, thereby, hereby, by the agency of, by dint of, by virtue of, in virtue of, through the medium of, along with, on the shoulders of, by means of, by the aid of, with the aid of, per fas et nefas, by fair means or foul, somehow, somehow or other, by hook or by crook.

Instrument
N instrument, machinery, mechanism, engineering, instrument, organ, tool, implement, utensil, machine, engine, lathe, gin, mill, air engine, caloric engine, heat engine, gear, tackle, tackling, rig, rigging, apparatus, appliances, plant, materiel, harness, trappings, fittings, accouterments, barde, equipment, equipmentage, appointments, furniture, upholstery, chattels, paraphernalia, mechanical powers, lever, leverage, mechanical advantage, crow, crowbar, handspike, gavelock, jemmy, jimmy, arm, limb, wing, oar, paddle, pulley, wheel and axle, wheelwork, clockwork, wheels within wheels, pinion, crank, winch, cam, pedal, capstan, wheel, inclined plane, wedge, screw, spring, mainspring, can hook, glut, heald, heddle, jenny, parbuckle, sprag, water wheel, handle, hilt, haft, shaft, heft, shank, blade, trigger, tiller, helm, treadle, key, turnscrew, screwdriver, knocker, hammer, edge tool, borer, vice, teeth, nail, rope, peg, support, spoon, arms, oar, cardiograph, recapper, snowplow, tenpenny, votograph, instrumental, mechanical, machinal, brachial.

Scepter
N scepter, regalia, caduceus, Mercury's rod, Mercury's staff, Mercury's wand, rod of empire, mace, fasces, wand, staff, staff of office, baton, truncheon, flag, ensign of authority, emblem of authority, badge of authority, insignia of authority, throne, chair, musnud, divan, dais, woolsack, toga, pall, mantle, robes of state, ermine, purple, crown, coronet, diadem, tiara, cap of maintenance, decoration, title, portfolio, key, signet, seals, talisman, helm, reins.

Cause
N cause, origin, source, principle, element, occasioner, prime mover, primum mobile, vera causa, author, mainspring, agent, leaven, groundwork, foundation, spring, fountain, well, font, fountainhead, spring head, wellhead, fons et origo, genesis, descent, remote cause, influence, pivot, hinge, turning point, lever, crux, fulcrum, key, proximate cause, causa causans, straw that breaks the camel's back, ground, reason, reason why, why and wherefore, rationale, occasion, derivation, final cause, les dessous des cartes, undercurrents, rudiment, egg, germ, embryo, bud, root, radix radical, etymon, nucleus, seed, stem, stock, stirps, trunk, tap-root, gemmule, radicle, semen, sperm, nest, cradle, nursery, womb, nidus, birthplace, hotbed, causality, causation, origination, production, caused, causal, original, primary, primitive, primordial, aboriginal, protogenal, radical, embryonic, embryotic, in embryo, in ovo, seminal, germinal, at the bottom of, connate, having a common origin, because, behind the scenes, causa latet vis est notissima, felix qui potuit rerum cognoscere causas.

Opening
N opening, hole, foramen, puncture, perforation, fontanel, transforation, pinhole, keyhole, loophole, porthole, peephole, mousehole, pigeonhole, eye of a needle, eyelet, slot, opening, aperture, apertness, hiation, yawning, oscitancy, dehiscence, patefaction, pandiculation, chasm, embrasure, window, casement, abatjour, light, sky light, fan light, lattice, bay window, bow window, oriel, dormer, lantern, outlet, inlet, vent, vomitory, embouchure, orifice, mouth, sucker, muzzle, throat, gullet, weasand, wizen, nozzle, placket, portal, porch, gate, ostiary, postern, wicket, trapdoor, hatch, door, arcade, cellarway, driveway, gateway, doorway, hatchway, gangway, lich gate, way, path, thoroughfare, channel, passage, passageway, tube, pipe, water pipe, air pipe, vessel, tubule, canal, gut, fistula, adjutage, ajutage, ostium, smokestack, chimney, flue, tap, funnel, gully, tunnel, main, mine, pit, adit, shaft, gallery, alley, aisle, glade, vista, bore, caliber, pore, blind orifice, fulgurite, thundertube, porousness, porosity, sieve, cullender, colander, cribble, riddle, screen, honeycomb, apertion, perforation, piercing, terebration, empalement, pertusion, puncture, acupuncture, penetration, key, opener, master key, password, combination, passe- partout, open, perforated, perforate, wide open, ajar, unclosed, unstopped, oscitant, gaping, yawning, patent, tubular, cannular, fistulous, pervious, permeable, foraminous, vesicular, vasicular, porous, follicular, cribriform, honeycombed, infundibular, riddled, tubulous, tubulated, piped, tubate, opening, aperient, Int, open sesame!.

Concord
N concord, accord, harmony, symphony, homologue, agreement, sympathy, empathy, response, union, unison, unity, bonds of harmony, peace, unanimity, league, happy family, rapprochement, reunion, amity, alliance, entente cordiale, good understanding, conciliation, peacemaker, intercessor, mediator, concordant, congenial, agreeing, in accord, harmonious, united, cemented, banded together, allied, friendly, fraternal, conciliatory, at one with, of one mind, at peace, in still water, tranquil, with one voice, in concert with, hand in hand, on one's side, commune periculum concordiam parit, melody concord, melody, rhythm, measure, rhyme, pitch, timbre, intonation, tone, scale, gamut, diapason, diatonic chromatic scale, enharmonic scale, key, clef, chords, modulation, temperament, syncope, syncopation, preparation, suspension, resolution, staff, stave, line, space, brace, bar, rest, appoggiato, appoggiatura, acciaccatura, note, musical note, notes of a scale, sharp, flat, natural, high note, low note, interval, semitone, second, third, fourth, diatessaron, breve, semibreve, minim, crotchet, quaver, semiquaver, demisemiquaver, hemidemisemiquaver, sustained note, drone, burden, tonic, key note, leading note, fundamental note, supertonic, mediant, dominant, submediant, subdominant, octave, tetrachord, major key, minor key, major scale, minor scale, major mode, minor mode, passage, phrase, concord, harmony, emmeleia, unison, unisonance, chime, homophony, euphony, euphonism, tonality, consonance, consent, part, harmony, harmonics, thorough-bass, fundamental-bass, counterpoint, faburden, piece of music, composer, harmonist, contrapuntist (musician), harmonious, harmonical, in concord, in tune, in concert, unisonant, concentual, symphonizing, isotonic, homophonous, assonant, ariose, consonant, measured, rhythmical, diatonic, chromatic, enharmonic, melodious, musical, melic, tuneful, tunable, sweet, dulcet, canorous, mellow, mellifluous, soft, clear, clear as a bell, silvery, euphonious, euphonic, euphonical, symphonious, enchanting fine-toned, full-toned, silver-toned, harmoniously, in harmony, as one, the hidden soul of harmony.

Color
N color, hue, tint, tinge, dye, complexion, shade, tincture, cast, livery, coloration, glow, flush, tone, key, pure color, positive color, primary color, primitive complementary color, three primaries, spectrum, chromatic dispersion, broken color, secondary color, tertiary color, local color, coloring, keeping, tone, value, aerial perspective, chromatics, spectrum analysis, spectroscopy, chromatism, chromatography, chromatology, prism, spectroscope, spectrograph, spectrometer, colorimeter (optical instruments), pigment, coloring matter, paint, dye, wash, distemper, stain, medium, mordant, oil paint, colored, colorific, tingent, tinctorial, chromatic, prismatic, full-colored, high-colored, deep-colored, doubly-dyed, polychromatic, chromatogenous, tingible, bright, vivid, intense, deep, fresh, unfaded, rich, gorgeous, gay, gaudy, florid, gay, garish, rainbow-colored, multihued, showy, flaunting, flashy, raw, crude, glaring, flaring, discordant, inharmonious, mellow, pastel, harmonious, pearly, sweet, delicate, tender, refined.

Interpretation
N interpretation, definition, explanation, explication, solution, answer, rationale, plain interpretation, simple interpretation, strict interpretation, meaning, translation, rendering, rendition, redition, literal translation, free translation, key, secret, clew, clavis, crib, pony, trot, exegesis, expounding, exposition, hermeneutics, comment, commentary, inference, illustration, exemplification, gloss, annotation, scholium, note, elucidation, dilucidation, eclaircissement, mot d'enigme, symptomatology, semiology, semeiology, semiotics, metoposcopy, physiognomy, paleography, oneirology acception, acceptation, acceptance, light, reading, lection, construction, version, equivalent, equivalent meaning, synonym, paraphrase, metaphrase, convertible terms, apposition, dictionary, polyglot, explanatory, expository, explicative, explicatory, exegetical, construable, polyglot, literal, paraphrastic, metaphrastic, consignificative, synonymous, equivalent, in explanation, that is to say, id est, videlicet, to wit, namely, in other words, literally, strictly speaking, in plain, in plainer terms, in plainer words, in plainer English, more simply.

Indication
N indication, symbolism, symbolization, semiology, semiotics, semeiology, semeiotics, Zeitgeist, characteristic, diagnostic, lineament, feature, trait, fingerprint, voiceprint, footprint, noseprint, cloven hoof, footfall, recognition (memory), diagnostic, divining rod, detector, sign, symbol, index, indice, indicator, point, pointer, exponent, note, token, symptom, dollar sign, dollar mark, type, figure, emblem, cipher, device, representation, epigraph, motto, posy, gesture, gesticulation, pantomime, wink, glance, leer, nod, shrug, beck, touch, nudge, dactylology, dactylonomy, freemasonry, telegraphy, chirology, byplay, dumb show, cue, hint, clue, clew, key, scent, signal, signal post, rocket, blue light, watch fire, watch tower, telegraph, semaphore, flagstaff, cresset, fiery cross, calumet, heliograph, guidon, headlight, mark, scratch, line, stroke, dash, score, stripe, streak, tick, dot, point, notch, nick, print, imprint, impress, impression, keyboard symbols, printing symbols, red letter, italics, sublineation, underlining, bold font, jotting, note, annotation, reference, blaze, cedilla, guillemets, hachure, quotation marks, ", double quotes, " ", parentheses, "( )", brackets, "", braces, "", left arrow, "<", right arrow, ">", forward slash, "/", backward slash, "\", exclamation point, "!", commercial at, "@", pound sign, "#", percent sign, "%", carat, "", ampersand, "&", asterisk, "*", hyphen, "-", dash, "-", "_", em dash, "--", plus sign, "+", equals sign, "=", question mark, "?", period, ", ", semicolon, ", ", colon, ":", comma, ", ", apostrophe, "'", single quote, "'", tilde, "~", badge, criterion, countercheck, countermark, countersign, counterfoil, duplicate, tally, label, ticket, billet, letter, counter, check, chip, chop, dib, totem, tessera, card, bill, witness, voucher, stamp, cacher, trade mark, Hall mark, signature, mark, autograph, autography, attestation, hand, hand writing, sign manual, cipher, seal, sigil, signet, hand and seal, paraph, brand, superscription, indorsement, endorsement, password, watchword, catchword, security card, pass, passkey, credentials, open sesame, timbrology, mot de passe, mot du guet, pass-parole, shibboleth, title, heading, docket, address card, visiting card, carte de visite, insignia, banner, banneret, bannerol, bandrol, flag, colors, streamer, standard, eagle, labarum, oriflamb, oriflamme, figurehead, ensign, pennon, pennant, pendant, burgee, blue Peter, jack, ancient, gonfalon, union jack, banderole, old glory, quarantine flag, vexillum, yellow-flag, yellow jack, tricolor, stars and stripes, bunting, heraldry, crest, coat of arms, arms, armorial bearings, hatchment, escutcheon, scutcheon, shield, supporters, livery, uniform, cockade, epaulet, chevron, garland, love knot, favor, beacon, cairn, post, staff, flagstaff, hand, pointer, vane, cock, weathercock, guidepost, handpost, fingerpost, directing post, signpost, pillars of Hercules, pharos, bale-fire, beacon-fire, l'etoile du Nord, landmark, seamark, lighthouse, balize, polestar, loadstar, lodestar, cynosure, guide, address, direction, name, sign, signboard, warning, omen, prefigurement, trace, record, warning &c, alarm, scepter, trophy, gauge, milestone, milepost, brand, fool's cap, check, telltale, test, mileage ticket, milliary, notification, advertisement, word of command, call, bugle call, trumpet call, bell, alarum, cry, battle cry, rallying cry, angelus, reveille, sacring bell, sanctus bell, exposition &c (explanation), proof, pattern, indicating, indicative, indicatory, denotative, connotative, diacritical, representative, typical, symbolic, pantomimic, pathognomonic, symptomatic, characteristic, demonstrative, diagnostic, exponential, emblematic, armorial, individual, known by, recognizable by, indicated, pointed, marked, denotable, indelible, in token of, symbolically, in dumb show, ecce signum, ex ungue leonem, ex pede Herculem, vide ut supra, vultus ariete fortior.

See related words and definitions of word "key" in Indonesian

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