[curb] n [MF courbe curve, curved piece of wood or iron, fr. courbe curved, fr. L curvus] (15c) 1: a bit that exerts severe pressure on a horse's jaws; also: the chain or strap attached to it
2: an enclosing frame, border, or edging
3: check, restraint "a price ~"
4: a raised edge or margin to strengthen or confine
5: an edging (as of concrete) built along a street to form part of a gutter
6. [fr. the fact that it orig. transacted its business on the street]: a market for trading in securities not listed on a stock exchange
[2]curb vt (1530) 1: to furnish with a curb
2: to check or control with or as if with a curb "trying to ~ her curiosity"
3: to lead (a dog) to a suitable place (as a gutter) for defecation syn see restrain