disc brake

noun, Automotive.

a brake system in which a disc attached to a wheel is slowed by the friction of brake pads being pressed against the disc by a caliper.

Also, disk brake.

Origin

1900-05

Examples from the web for disc brake

However, shortly thereafter the axle shifted and the disc brake started rubbing against other parts.
The workers produced castings for brake drums and disc brake rotors.
The air disc brake configuration showed better performance in this test over the other configurations for stopping efficiency.
disc brake stopping distance performance was better than that of drum brakes, and their frequency of repair was much lower.
The park brake was a lever-activated caliper disc brake, operated by an air operated cylinder with a spring mounted inside.

British Dictionary definitions for disc brake

noun

a type of brake in which two calliper-operated pads rub against a flat disc attached to the wheel hub when the brake is applied

disc brake in Science

disc brake also disk brake

(dĭsk)

A brake in which friction is caused by a set of pads, usually made of steel, that press against a rotating disk to slow or stop its rotation.