/ Dictionary / Index B BW: Meaning and Definition of Find definitions for: BW Pronunciation: [key] bacteriological warfare. See (in television, motion pictures, photography, etc.) black and white, as opposed to color. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bw (Thesaurus) bvt. bwana Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language