noun

1. a chain or strap passed around a horse's lower jaw and attached to the bit (curb bit): the curb checks the horse by causing it to lower its head when the reins are pulled
2. anything that checks, restrains, or subdues
3. an enclosing framework
4. a raised margin around or along an edge, to strengthen or confine
5. the stone or concrete edging forming a gutter along a street
6. a market dealing in stocks and bonds not listed on the stock exchange: so called from the fact that early markets conducted their business on the street

Etymology: ME & OFr courbe, curve, curb, orig., adj., curved, bent < L curvus: see curve

transitive verb

1. to restrain; check; control to curb an impulse
2. to lead (a dog being walked) to the curb or some other place where it may pass its waste matter
3. to provide with a curb