KO

UK [ˌkeɪ ˈəʊ] / US [ˌkeɪ ˈoʊ] noun [countable]
Word forms "KO":
singular KO plural KO's informal

a knockout in a fight

Derived word:
KO
UK / US verb transitive
Word forms "KO":
present tense I/you/we/they KO he/she/it KO's present participle KO'ing past tense KO'd past participle KO'd