/ Dictionary / Index R reindeer: Meaning and Definition of Find definitions for: rein•deer Pronunciation: (rān'dēr"), [key] — pl. -deer, -deers. any of several large deer of the genus Rangifer, of northern and arctic regions of Europe, Asia, and North America, both male and female of which have antlers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: reindeer (Thesaurus) reincarnation Reindeer Lake Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language