/ Dictionary / Index B brown bat: Meaning and Definition of Find definitions for: brown' bat' Pronunciation: [key] any of several small to medium-sized common bats of the genera Myotis and Eptesicus, found worldwide in caves, trees, and buildings, including M. lucifugusand E. fuscusa widespread North American species. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. brown-bag brown bear Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language