curb

noun

1. (US)A concrete margin along the edge of a road; a kerb (UK, Australia, New Zealand).
2. (US)A raised margin along the edge of something, such as a well or the eye of a dome, as a strengthening.
3. (US, figuratively)Something that checks or restrains; a restraint.

   “Even by theſe Men, Religion, that ſhould be / The curb, is made the ſpur to tyranny: / They with their double key of conſcience bind / The Subjects ſouls, and leave Kings unconfin'd; […]”

   “The same also is that burning mention’d by S. Paul, whereof mariage ought to be the remedy; the Flesh hath other naturall and easie curbs which are in the power of any temperate man..”

   “She maintains that the internet should face similar curbs to TV because young people are increasingly living online. "It's totally different, someone at Google watching the video from the comfort of their office in San Francisco to someone from a council house in London, where this video is happening right outside their front door."”

4. (US)A riding or driving bit for a horse that has rein action which amplifies the pressure in the mouth by leverage advantage placing pressure on the poll via the crown piece of the bridle and chin groove via a curb chain.

   “He that before ran in the pastures wild / Felt the stiff curb controul his angry jaws.”

   “Captain went out in the cab all the morning. Harry came in after school to feed me and give me water. In the afternoon I was put into the cab. Jerry took as much pains to see if the collar and bridle fitted comfortably, as if he had been John Manly over again. When the crupper was let out a hole or two, it all fitted well. There was no bearing rein—no curb—nothing but a plain ring snaffle. What a blessing that was!”

5. (Canada, US)A sidewalk, covered or partially enclosed, bordering the airport terminal road system with adjacent paved areas to permit vehicles to off-load or load passengers.
6. (US)A swelling on the back part of the hind leg of a horse, just behind the lowest part of the hock joint, generally causing lameness.

verb

1. (US, transitive)To check, restrain or control.

   “Curb your dog”

   “Where pinching want must curb her warm desires.”

   “But the village's growth was curbed by the cliffs that restricted onward exploration for visitors, while goods such as coal and lime, which had arrived by water, were being transported up the severe incline to the town of Lynton by horse and cart.”

2. (US, transitive)To rein in.
3. (US, transitive)To furnish (a well etc.) with a curb; to restrain (a bank of earth, etc.) by a curb.
4. (US, abbreviation, alt-of, ellipsis, slang, transitive)Ellipsis of curb stomp.
5. (US, transitive)To bring to a stop beside a curb.

   “As had become her habit, Jane rove past her destination and curbed the car on a side street a block and a half away.”

6. (US, transitive)To damage vehicle wheels or tires by running into or over a pavement curb.
7. (US, transitive)To bend or curve.

   “[B]y crooked and curbed lines, wee looke within the water; for our eie ſight doth bend and turne againe perforce, by reason that the matter of the water is more thicke; which is the cauſe, that we ſee the mariners oare in the ſea a farre off, as it were crooked.”

8. (US, intransitive)To crouch; to cringe.

   “Virtue itself of vice must pardon beg, / Yea, curb and woo for leave to do him good.”