/ Dictionary / Index B bonnethead: Meaning and Definition of Find definitions for: bon•net•head Pronunciation: (bon'it-hed"), [key] — n. a hammerhead shark, Sphyrna tiburo, found in shallow waters from Brazil to Massachusetts, having a spade-shaped head. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bonnethead (Thesaurus) bonnet glass bonnetière 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