/ Dictionary / Index B B-17: Meaning and Definition of Find definitions for: B-17 Pronunciation: (bē'sev"un tēn'), [key] — pl. B-17's. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. B-1 B-29 Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language