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[nok-awf, -of] /ˈnɒkˌɔf, -ˌɒf/
an act or instance of knocking off.
an unlicensed copy of something, especially fashion clothing, intended to be sold at a lower price than the original.
Origin of knockoff
1870-75, for an earlier sense; noun use of verb phrase knock off Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for knockoff
  • It also said that knockoff's did not contain this quality.
  • But where customers shop, so too do knockoff artists.
  • They protect our military members by preventing the spread of untested and ineffective knockoff components.
  • The knockoff packs may not have the same safety circuitry as the original packs, and could be dangerous in actual operation.
  • Nonetheless, many people buy these knockoff replacements.
  • They also protect our military members by preventing the spread of untested and ineffective knockoff components.
British Dictionary definitions for knockoff

knock off

verb (mainly adverb)
(intransitive, also preposition) (informal) to finish work: we knocked off an hour early
(transitive) (informal) to make or do hastily or easily: to knock off a novel in a week
(transitive; also preposition) (informal) to reduce the price of (an article) by (a stated amount)
(transitive) (slang) to kill
(transitive) (slang) to rob or steal: to knock off a bank, to knock off a watch
(transitive) (slang) to stop doing something, used as a command: knock it off!
(transitive) (slang) to have sexual intercourse with; to seduce
  1. an illegal imitation of a well-known product
  2. (as modifier): knockoff watches
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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Word Origin and History for knockoff

"cheap imitation," 1966, from the verbal phrase knock off "do hastily;" in reference to the casual way the things are made.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for knockoff


  1. The cab of a locomotive (1940s+ Railroad)
  2. The stomach
  3. The space over home plate where a batter finds it easiest to hit a fair ball; a batter's preferred point of delivery; wheelhouse: He'd throw it in my kitchen, so I moved up a step toward the plate (1970+ Baseball)
Related Terms

if you can't stand the heat* stay out of the kitchen

[baseball sense perhaps ultimately fr kitchen, ''stomach,'' found by 1594]

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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