/ Dictionary / Index H high-five: Meaning and Definition of Find definitions for: high-five Pronunciation: (hī'fīv'), [key] — n. a gesture of greeting, good-fellowship, or triumph in which one person slaps the upraised palm of the hand against that of another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: high-five (Thesaurus) high finance, highflier Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language