/ Dictionary / Index D defence: Meaning and Definition of Find definitions for: de•fence Pronunciation: (di-fens'), [key] — -fenced, -fenc•ing. defense. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: defence (Thesaurus) defederalize defend Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language