Bent; curved; arched.n. A hard and callous swelling on various parts of a horse's leg, as the hinder part of the hock, the inside of the hoof, beneath the elbow of the hoof, etc.To bend; curve.To bend to one's will; check; restrain; hold in check; control; keep in subjection: as, to curb the passions.To restrain or control with a curb; guide and manage with the reins.To strengthen or defend by a curb: as, to curb a well or a bank of earth.To bend; crouch.n. That which checks, restrains, or holds back; restraint; check; control.n. Specifically A chain or strap attached to the upper ends of the branches of the bit of a bridle, and passing under the horse's lower jaw, used chiefly in controlling an unruly or high-spirited horse.n. A line of joined stones set upright at the outer edge of a walk, or at one of the edges of a street or road, forming the inner side of a gutter; a row of curbstones.n. In mech.: A breast-wall or retaining-wall erected to support a bank of earth. A casing of stone, wood, brick, or iron, built inside a well that is being sunk, or the framework above and around a well. A boarded structure used to contain concrete until it hardens into a pier or foundation. The outer casing of a turbine-wheel. A curved shrouding which confines the water against the floats or buckets of a scoop-wheel or breast-wheel. The wall-plate at the springing of a dome. The wall-plate on the top of the permanent part of a windmill, on which the cap rotates as the wind veers. An inclined circular plate placed round the edge of a kettle to prevent the contents from boiling over.n. Same as crib, 11.