/ Dictionary / Index B bx: Meaning and Definition of Find definitions for: bx Pronunciation: [key] See bx. Pronunciation: [key] — pl. bxs. box. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. B.W.I. BX cable 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