/ Dictionary / Index B begun: Meaning and Definition of Find definitions for: be•gun Pronunciation: (bi-gun'), [key] — v. pp. of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: begun (Thesaurus) begum behalf 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