Definition of reindeer noun from the Oxford Advanced American Dictionary

 

reindeer

 noun
noun
NAmE//ˈreɪndɪr//
 
(pl. reindeer or reindeers)
 
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a large deer with long antlers (= horns shaped like branches), that lives in cold northern regions herds of reindeer
See the Oxford Advanced Learner's Dictionary entry: reindeer