/ Dictionary / Index B BB: Meaning and Definition of Find definitions for: BB Pronunciation: (bē'bē"), [key] — n. a size of shot, 0.18 in. (0.46 cm) in diameter, fired from an air rifle or BB gun. Also calledshot of this size. BB Pronunciation: [key] a quality rating for a corporate or municipal bond, lower than BBB and higher than B. bb. Pronunciation: [key] ball bearing. base on balls; bases on balls. B/B Pronunciation: [key] bottled in bond. B.B. Pronunciation: [key] bail bond. Blue Book. B'nai B'rith. Bureau of the Budget. b.b. Pronunciation: [key] bail bond. baseboard. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bb (Thesaurus) bazooka B.B.A. 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