/ Dictionary / Index B Bren gun: Meaning and Definition of Find definitions for: Bren' gun" Pronunciation: (bren), [key] a .303-caliber, gas-operated, air-cooled, clip-fed submachine gun. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Brenda Brenham 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