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[noun key-oh, key-oh; verb key-oh] /noun ˈkeɪˈoʊ, ˈkeɪˌoʊ; verb ˈkeɪˈoʊ/ Slang.

noun, plural KO’s.
a knockout in boxing.
verb (used with object), KO’d, KO’ing.
to knock unconscious, especially in a boxing match; knock out.
verb KO’s, KO’ing, KO’d, k.o.’s, k.o.’ing, k.o.’d
a slang term for knock out See knockout
noun (pl) KO’s, k.o.’s
a slang term for knockout


: aKO punch


A knockout; kayo (1922+ Prizefight)


: He KOed six in a row

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