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knockout

 [nok-out]  

knock·out

   [nok-out]
noun
1.
an act or instance of knocking out.
2.
the state or fact of being knocked out.
3.
a knockout blow.
4.
Informal. a person or thing overwhelmingly attractive, appealing, or successful.
5.
a panel in a casing, can, or box, especially of metal or plastic, so designed that it can readily be removed, as by punching, hammering, or cutting, to provide an opening into the interior: a knockout in a junction box.
EXPAND
6.
Machinery. a device for knocking something loose, as finished work from a lathe chuck.
COLLAPSE
adjective
7.
that knocks out: the knockout punch.

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Knockout is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
a gadget; dingus; thingumbob.
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Origin:
1810–20; 1935–40 for def. 4; noun, adj. use of verb phrase knock out
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Collins
World English Dictionary
knockout (ˈnɒkˌaʊt)
 
—n
1.  the act of rendering unconscious
2.  a blow that renders an opponent unconscious
3.  a.  a competition in which competitors are eliminated progressively
 b.  (as modifier): a knockout contest
4.  a series of absurd invented games, esp obstacle races, involving physical effort or skill
5.  informal a person or thing that is overwhelmingly impressive or attractive: she's a knockout
 
—vb
6.  to render unconscious, esp by a blow
7.  boxing to defeat (an opponent) by a knockout
8.  to destroy, damage, or injure badly
9.  to eliminate, esp in a knockout competition
10.  informal to overwhelm or amaze, esp with admiration or favourable reaction: I was knocked out by that new song
11.  to remove the ashes from (one's pipe) by tapping

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Slang Dictionary

knockout definition


  1. n.
    something that is quite stunning. : Your new car is a knockout.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
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