/ Dictionary / Index D deer: Meaning and Definition of Find definitions for: deer Pronunciation: (dēr), [key] — pl. deer, deers. any of several ruminants of the family Cervidae, most of the males of which have solid, deciduous antlers. any of the smaller species of this family, as distinguished from the moose, elk, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deer (Thesaurus) deepwater deerberry Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language