/ Dictionary / Index T triple-header: Meaning and Definition of Find definitions for: tri•ple-head•er Pronunciation: (trip'ul-hed'ur), [key] — n. Sports. a set of three games, as of basketball, each game being played in the same arena on the same day and often between different pairs of teams. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triple fugue triple integral Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language