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disc brake

or disk brake

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noun Automotive.
  1. 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.
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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
  1. 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
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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

  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.