/ Dictionary / Index A air-breather: Meaning and Definition of Find definitions for: air-breath•er Pronunciation: (âr'brē"ur), [key] — n. an aircraft, missile, or submarine engine that requires air from the atmosphere for the combustion of its fuel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air-breathe air brick Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language