KO - definition of KO by The Free Dictionary
Define KO. KO synonyms, KO pronunciation, KO translation, English dictionary definition of KO. Slang tr.v. KO'd , KO'ing , KO's To knock out, as in boxing. n. A knockout, as in boxing. American Heritage® Dictionary of the English Language, Fifth...
DA: 60 PA: 46 MOZ Rank: 19