Meaning of “knockout” in the English Dictionary

"knockout" in British English

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knockoutnoun [ C ]

uk /ˈnɒk.aʊt/ us /ˈnɑːk.aʊt/

knockout noun [ C ] (COMPETITION)

US elimination tournament a competition in which only the winners of each stage play in the next stage, until one competitor or team is the final winner:

The tournament is a straight knockout.

knockout noun [ C ] (ATTRACTIVE)

informal a person or thing that looks, sounds, etc. extremely attractive:

Your sister's a real knockout!

Idiom(s)

knockoutadjective

uk /ˈnɒk.aʊt/ us /ˈnɑːk.aʊt/ informal

(Definition of “knockout” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"knockout" in American English

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knockoutnoun [ C ]

us /ˈnɑkˌɑʊt/

knockout noun [ C ] (BOXING)

abbreviation KO (in boxing) a situation in which a fighter falls after being hit and cannot get up in ten seconds:

He won by a knockout in the tenth round.

knockout noun [ C ] (ATTRACTION)

slang a very attractive person or thing:

She was a real knockout in her new dress.

(Definition of “knockout” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"knockout" in Business English

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knockoutnoun [ C ]

also knock-out uk /ˈnɒkaʊt/ us FINANCE

an offer to buy something that is higher than competitors' offers:

His bid was seen as a knock-out and shares of competing companies fell.
a knockout bid/offer/price

(Definition of “knockout” from the Cambridge Business English Dictionary © Cambridge University Press)