/ Dictionary / Index B bonehead: Meaning and Definition of Find definitions for: bone•head Pronunciation: (bōn'hed"), [key] — Slang. Slang. —n. a foolish or stupid person; blockhead. —adj. being of, by, or for a stupid or unthinking person: a bonehead mistake. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bonehead (Thesaurus) bonefish bone marrow 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