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English definition of “knockout”

knockout

noun [C] (UNCONSCIOUS)    /ˈnɒk.aʊt/ US  /ˈnɑːk-/
in boxing, the act of hitting the other fighter so that they fall to the ground and are unable to get up again within ten seconds: a knockout punch/blow → See also knock sb outBoxing
(Definition of knockout noun (UNCONSCIOUS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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