/ Dictionary / Index B blow-hard: Meaning and Definition of Find definitions for: blow-hard Pronunciation: (blō'härd"), [key] — n. Slang. an exceptionally boastful and talkative person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: blow-hard (Thesaurus) blowgun blowhole 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