/ Dictionary / Index D Dempsey: Meaning and Definition of Find definitions for: Demp•sey Pronunciation: (demp'sē), [key] (William Harrison Dempsey), 1895–1983, U.S. boxer: world heavyweight champion 1919–26. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dempsey (Thesaurus) demount dempster Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language