/ Dictionary / Index B bast fiber: Meaning and Definition of Find definitions for: bast' fi"ber Pronunciation: [key] bast (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. baster Bastia Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language