/ Dictionary / Index B bireme: Meaning and Definition of Find definitions for: bi•reme Pronunciation: (bī'rēm), [key] — n. Naut. a galley having two banks or tiers of oars. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. birefringence biretta Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language