The border, edge, or margin of a thing, usually of something circular or curving; as, the rim of a kettle or basin. [1913 Webster]
The lower part of the abdomen. Shak. [1913 Webster]

Arch rim (Phonetics), the line between the gums and the palate. -- Rim-fire cartridge. (Mil.) See under Cartridge. -- Rim lock. See under Lock.

rim, v. t.

To furnish with a rim; to border. [1913 Webster]

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OXFORD DICTIONARY

rim, n. & v.
--n.
1 a a raised edge or border. b a margin or verge, esp. of something circular.
2 the part of a pair of spectacles surrounding the lenses.
3 the outer edge of a wheel, on which the tyre is fitted.
4 a boundary line (the rim of the horizon).
--v.tr. (rimmed, rimming)
1 a provide with a rim. b be a rim for or to.
2 edge, border.

Idiom

rim-brake a brake acting on the rim of a wheel.

Derivative

rimless adj. rimmed adj. (also in comb.).

Etymology

OE rima edge: cf. ON rimi ridge (the only known cognate)

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THESAURUS

rim

adjoin, balloon tire, bank, befringe, belted bias tire, belted radial tire, bias tire, bind, board, border, bordure, bound, brim, brink, brow, coast, edge, enframe, featheredge, felly, flange, frame, fringe, hem, labellum, labium, labrum, lap, ledge, limb, limbus, line, lip, list, march, marge, margin, marginate, nonskid tire, outline, perimeter, periphery, pneumatic tire, purfle, purl, radial tire, ragged edge, retread, retreaded tire, safety tire, selvage, set off, shore, side, sideline, skirt, snow tire, studded tire, tire, trim, tubeless tire, verge, white sidewall tire, winter tire

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ROGET THESAURUS

rim

Edge

N edge, verge, brink, brow, brim, margin, border, confine, skirt, rim, flange, side, mouth, jaws, chops, chaps, fauces, lip, muzzle, threshold, door, porch, portal, coast, shore, frame, fringe, flounce, frill, list, trimming, edging, skirting, hem, selvedge, welt, furbelow, valance, gimp, border, marginal, skirting, labial, labiated, marginated.