/ Dictionary / Index T three-bagger: Meaning and Definition of Find definitions for: three-bag•ger Pronunciation: (thrē'bag'ur), [key] — n. Baseball Informal. triple (def. 7). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: three-bagger (Thesaurus) three-a-cat three-ball match Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language