/ Dictionary / Index B BATF: Meaning and Definition of Find definitions for: BATF Pronunciation: [key] Bureau of Alcohol, Tobacco, and Firearms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Batesian mimicry batfish Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language