knocksomeone out
kayo
noun[ C ]
 informaluk /ˌkeiˈəʊ/ us /ˌkeiˈoʊ/pluralkayos or orkayoes
the act of making someone unconscious, especially in boxing:
He beat Singer by a kayo in the third round.
He went all out for a kayo in the last round, but left himself open.
He continues to re-establish himself after a shock first-round kayo loss last year.
He had a record of 24 wins, 20 of them kayoes.

SMART Vocabulary: related words and phrases

Fighting sports
aikido
all-in wrestling
arm-wrestling
armlock
bantamweight
feint
gumshield
half nelson
hammerlock
hapkido
haymaker
outfight
punching bag
rabbit punch
rope
rounder
roundhouse
southpaw
wristlock
wushu

Synonyms