disc brake

or disk 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.

Origin of disc brake

First recorded in 1900–05

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for disc brake

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

disc brake in Science

disc brake

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.