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.
Phrases and idioms:
rim-brake a brake acting on the rim of a wheel.
Derivatives:
rimless adj. rimmed adj. (also in comb.).
Etymology: OE rima edge: cf. ON rimi ridge (the only known cognate)