/ Dictionary / Index T TKO: Meaning and Definition of Find definitions for: TKO Pronunciation: [key] — Boxing. Boxing. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tko (Thesaurus) tk. tkt. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language