n. & v.
--n.
1. a check or restraint.
2 a strap etc. fastened to the bit and passing under a horse's lower jaw, used as a check.
3 an enclosing border or edging such as the frame round the top of a well or a fender round a hearth.
4 KERB.
--v.tr.
1. restrain.
2 put a curb on (a horse).
Phrases and idioms:
curb roof a roof of which each face has two slopes, the lower one steeper.
Etymology: ME f. OF courber f. L curvare bend, CURVE