/ Dictionary / Index T tribrach: Meaning and Definition of Find definitions for: tri•brach Pronunciation: (trī'brak, trib'rak), [key] — n. a foot of three short syllables. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. triboluminescence tribromide 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