/ Dictionary / Index T tip-in: Meaning and Definition of Find definitions for: tip-in Pronunciation: (tip'in"), [key] — n. Basketball. tap-in. tip-in Pronunciation: (tip'in"), [key] — n. tip (def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tip-in (Thesaurus) tipi tip-off Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language