Autobahn, US highway, abatis, abysm, abyss, advanced work, alley, alleyway, aqueduct, arch dam, arroyo, arterial, arterial highway, arterial street, artery, artificial lake, autoroute, autostrada, avenue, backstop, balistraria, bamboo curtain, bank, banquette, bar, barbed-wire entanglement, barbican, barrage, barricade, barrier, bartizan, bastion, battlement, bayou lake, bear-trap dam, beaver dam, belt highway, blind alley, boom, bore, boulevard, box canyon, breach, break, breakwater, breastwork, brick wall, buffer, bulkhead, bulwark, burrow, bypass, byway, camino real, canal, canalization, canalize, canyon, carriageway, carve, casemate, causeway, causey, cavity, chamfer, channel, chap, chasm, chaussee, check, cheval-de-frise, chimney, chink, chisel, chute, circumferential, circumvallation, cistern, cleft, cleuch, close, clough, cofferdam, col, contravallation, corduroy road, corrugate, coulee, couloir, counterscarp, country rock, county road, court, crack, cranny, crescent, crevasse, crevice, crimp, cul-de-sac, curtain, cut, cwm, dado, dam, dead water, dead-end street, defense, defile, dell, delve, demibastion, deposit, dig, dig out, dirt road, ditch, donga, draw, drawbridge, dredge, drill, drive, driveway, earthwork, embankment, enclosure, engrave, entanglement, entrenchment, escarp, escarpment, etang, excavate, excavation, expressway, farm pond, fault, fence, fieldwork, fishpond, fissure, flaw, flume, flute, fortalice, fortification, fosse, fracture, freeway, freshwater lake, furrow, gangue, gap, gape, gash, gate, glacial lake, glacis, goffer, gorge, gouge, gouge out, gravel road, gravity dam, groin, groove, grub, gulch, gulf, gully, gutter, ha-ha, highroad, highway, highways and byways, hole, hydraulic-fill dam, incise, incision, inland sea, interstate highway, iron curtain, jam, jetty, joint, kennel, kloof, lagoon, laguna, lake, lakelet, landlocked water, lane, leak, leaping weir, levee, linn, local road, loch, lode, lodestuff, logjam, loophole, lough, lower, lunette, machicolation, main drag, main road, mantelet, matrix, mere, merlon, mews, milldam, millpond, millpool, mine, mineral deposit, moat, mole, motorway, mound, notch, nullah, nyanza, opening, ore bed, outwork, oxbow lake, palisade, parados, parapet, parkway, pass, passage, pave, paved road, pay dirt, pike, place, plank road, plash, pleat, plow, pond, pondlet, pool, portcullis, postern gate, primary highway, private road, puddle, quarry, rabbet, rampart, ravelin, ravine, redan, redoubt, rent, reservoir, rifle, rift, right-of-way, rime, ring road, road, roadbed, roadblock, roadway, rock-fill dam, route nationale, row, royal road, rupture, rut, salina, sally port, salt pond, sap, scarp, scissure, sconce, scoop, scoop out, score, scrabble, scrape, scratch, seam, seawall, secondary road, shoot, shovel, shutter dam, sink, slit, slot, spade, speedway, split, stagnant water, standing water, state highway, still water, stock, stockade, stone wall, streak, street, striate, sump, sunk fence, superhighway, tank, tarn, tenaille, terrace, thoroughfare, through street, thruway, tidal pond, toll road, township road, trench, trough, tunnel, turnpike, vallation, valley, vallum, vein, void, volcanic lake, wadi, wall, water hole, water pocket, weir, well, wicket dam, work, wrinkle, wynd
defense, protection, guard, ward, shielding, propugnation, preservation, guardianship, area defense, site defense, self-defense, self-preservation, resistance, safeguard, balistraria, bunker, screen, camouflage, fortification, munition, muniment, trench, foxhole, bulwark, fosse, moat, ditch, entrenchment, intrenchment, kila, dike
, dyke, parapet, sunk fence, embankment, mound, mole, bank, sandbag, revetment, earth work, field- work, fence, wall dead wall, contravallation, paling, palisade, haha, stockade, stoccado, laager, sangar, barrier, barricade, boom, portcullis, chevaux de frise, abatis, abattis, abbatis, vallum, circumvallation, battlement, rampart, scarp, escarp, counter-scarp, glacis, casemate, vallation, vanfos, buttress, abutment, shore, breastwork, banquette, curtain, mantlet, bastion, redan, ravelin, vauntmure, advance work, horn work, outwork, barbacan, barbican, redoubt, fort-elage, fort-alice, lines, loophole, machicolation, sally port, hold, stronghold, fastness, asylum, keep, donjon, dungeon, fortress, citadel, capitol, castle, tower of strength, tower of strength, fort, barracoon, pah, sconce, martello tower, peelhouse, blockhouse, rath, wooden walls, bulletproof vest, armored vest, buffer, corner stone, fender, apron, mask, gauntlet, thimble, carapace, armor, shield, buckler, aegis, breastplate, backplate, cowcatcher, face guard, scutum, cuirass, habergeon, mail, coat of mail, brigandine, hauberk, lorication, helmet, helm, bassinet, salade, heaume, morion, murrion, armet, cabaset, vizor, casquetel, siege cap, headpiece, casque, pickelhaube, vambrace, shako, bearskin, panoply, truncheon, garrison, picket, piquet, defender, protector, guardian, bodyguard, champion, knight-errant, Paladin, propugner, bulletproof window, hardened site, defending, defensive, mural, armed, armed at all points, armed cap-a-pie, armed to the teeth, panoplied, iron-plated, ironclad, loopholed, castellated, machicolated, casemated, defended, proof against, armored, ballproof, bulletproof, hardened, defensively, on the defense, on the defensive, in defense, at bay, pro aris et focis, Int, no surrender!, defense not defiance, Dieu defend le droit, fidei defensor, defender of the faith.
interval, interspace, separation, break, gap, opening, hole, chasm, hiatus, caesura, interruption, interregnum, interstice, lacuna, cleft, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure, rift, flaw, breach, rent, gash, cut, leak, dike
, ha-ha, gorge, defile, ravine, canon, crevasse, abyss, abysm, gulf, inlet, frith, strait, gully, pass, furrow, abra, barranca, barranco, clove, gulch, notch, yawning gulf, hiatus maxime, hiatus valde deflendus, parenthesis, void, incompleteness, period, interim (time), with an interval, far between, breachy, rimose, rimulose, at intervals, longo intervallo.
inclosure, envelope, case, wrapper, girdle, pen, fold, pen fold, in fold, sheep fold, paddock, pound, corral, yard, net, seine net, wall, hedge, hedge row, espalier, fence, pale, paling, balustrade, rail, railing, quickset hedge, park paling, circumvallation, enceinte, ring fence, barrier, barricade, gate, gateway, bent, dingle, door, hatch, cordon, prison, dike
, dyke, ditch, fosse, moat.
furrow, groove, rut, sulcus, scratch, streak, striae, crack, score, incision, slit, chamfer, fluting, corduroy road, cradle hole, channel, gutter, trench, ditch, dike
, dyke, moat, fosse, trough, kennel, ravine, tajo, thank-ye-ma'am, furrowed, ribbed, striated, sulcated, fluted, canaliculated, bisulcous, bisulcate, bisulcated, canaliferous, trisulcate, corduroy, unisulcate, costate, rimiform.
gulf, lake, land covered with water, gulf, gulph, bay, inlet, bight, estuary, arm of the sea, bayou, fiord, armlet, frith, firth, ostiary, mouth, lagune, lagoon, indraught, cove, creek, natural harbor, roads, strait, narrows, Euripus, sound, belt, gut, kyles, continental slope, continental shelf, lake, loch, lough, mere, tarn, plash, broad, pond, pool, lin, puddle, slab, well, artesian well, standing water, dead water, sheet of water, fish pond, mill pond, ditch, dike
, dyke, dam, reservoir, alberca, barachois, hog wallow, lacustrine.
conduit, channel, duct, watercourse, race, head race, tail race, abito, aboideau, aboiteau, bito, acequia, acequiador, acequiamadre, arroyo, adit, aqueduct, canal, trough, gutter, pantile, flume, ingate, runner, lock-weir, tedge, vena, dike
, main, gully, moat, ditch, drain, sewer, culvert, cloaca, sough, kennel, siphon, piscina, pipe, funnel, tunnel, water pipe, waste pipe, emunctory, gully hole, artery, aorta, pore, spout, scupper, adjutage, ajutage, hose, gargoyle, gurgoyle, penstock, weir, flood gate, water gate, sluice, lock, valve, rose, waterworks, pipeline, vascular.