kay·o
noun/keɪˈəʊ/
/keɪˈəʊ/
(also KO)
(plural kayos)
- knockout (= in boxing, a hard hit that makes an opponent fall to the ground and be unable to get up, so that they lose the fight)
击倒（=拳击中，重击使对手倒地无法站起来，从而输掉比赛） Word Origin1920s: representing the pronunciation of KO.