/ Dictionary / Index B biz: Meaning and Definition of Find definitions for: biz Pronunciation: (biz), [key] — n. Informal. business: How's the used car biz these days? Her brother's in show biz. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: biz (Thesaurus) Biysk bizarre 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