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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
1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for disc-brake

disc brake

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
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disc-brake in Science
disc brake also disk 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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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