- a rigid plate, usually of steel in the shape of an arc of a cylinder, coated on the outside of its curved surface with a friction-producing material and tightened against the inside of a brake drum to produce a braking action.
- (on a bicycle) one of two metal blocks holding rubber pads that, when the hand brake is activated, press against the rotating wheel to produce a braking action.
- the curved metal casting to which the brake lining is riveted in a drum brake
- the curved metal casting together with the attached brake lining
