a rim, especially of joined stones or concrete, along a street or roadway, forming an edge for a sidewalk.
2.
anything that restrains or controls; a restraint; check.
3.
an enclosing framework or border.
4.
Also called curb bit.a bit used with a bridoon for control of a horse, to which a chain (curb chain) is hooked.
5.
Also called curb market;, British,kerb market, kerbstone market.a market, originally on the sidewalk or street, for the sale of securities not listed on a stock exchange. Compare American Stock Exchange.
6.
the framework around the top of a well.
7.
the arris between an upper and a lower slope on a gambrel or mansard roof.
8.
a belt of metal, masonry, etc., for abutting a dome at its base.
9.
(in a windmill) the track on which the cap turns.
10.
Veterinary Pathology. a swelling on the lower part of the back of the hock of a horse, often causing lameness.
11.
Engineering. the cutting edge at the bottom of a caisson.
late 15c., "strap passing under the jaw of a horse," from O.Fr. courbe "curve, curb," from L. curvus, from curvare "to bend" (see curve). Meaning "enclosed framework" is from 1510s, probably originally with a notion of "curved;" extended to margins of garden beds 1731; to
"margin of stone between a sidewalk and road" 1836 (sometimes spelled kerb). The verb (1520s) is from the notion of putting a curb on a horse; fig. sense first attested 1580s.