/ Dictionary / Index B boaster: Meaning and Definition of Find definitions for: boast•er Pronunciation: (bō'stur), [key] — n. a person who boasts or brags. boast•er Pronunciation: (bō'stur), [key] — n. Masonry. a chisel for boasting stone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: boaster (Thesaurus) boast boastful 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