A deer is a four-legged, hoofed animal with antlers. Disney’s Bambi is a famous deer. There are deer all over the world, but American deer are light brown, and are often found nibbling on plants at dusk.

The main thing that distinguishes deer from other horned animals, like antelope, is that deer shed their antlers once a year and grow new ones. A female deer, called a "doe," has smaller antlers than the male, or "buck." The Old English root of deer, deor, means "beast" or "animal," and was originally used generally to refer to all four-legged wild animals.

Definitions of deer
  1. noun
    distinguished from Bovidae by the male's having solid deciduous antlers
    synonyms: cervid
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    male deer in his second year
    a young deer
    American elk, Cervus elaphus, elk, red deer, wapiti
    common deer of temperate Europe and Asia
    Cervus unicolor, sambar, sambur
    a deer of southern Asia with antlers that have three tines
    American elk, Cervus elaphus canadensis, elk, wapiti
    large North American deer with large much-branched antlers in the male
    Cervus nipon, Cervus sika, Japanese deer, sika
    small deer of Japan with slightly forked antlers
    Odocoileus Virginianus, Virginia deer, white tail, white-tailed deer, whitetail, whitetail deer
    common North American deer; tail has a white underside
    Odocoileus hemionus, burro deer, mule deer
    long-eared deer of western North America with two-pronged antlers
    Alces alces, European elk, elk, moose
    large northern deer with enormous flattened antlers in the male; called `elk' in Europe and `moose' in North America
    Dama dama, fallow deer
    small Eurasian deer
    Capreolus capreolus, roe deer
    small graceful deer of Eurasian woodlands having small forked antlers
    Greenland caribou, Rangifer tarandus, caribou, reindeer
    Arctic deer with large antlers in both sexes; called 'reindeer' in Eurasia and 'caribou' in North America
    small South American deer with unbranched antlers
    barking deer, muntjac
    small Asian deer with small antlers and a cry like a bark
    Moschus moschiferus, musk deer
    small heavy-limbed upland deer of central Asia; male secretes valued musk
    Elaphurus davidianus, elaphure, pere david's deer
    large Chinese deer surviving only in domesticated herds
    hart, stag
    a male deer, especially an adult male red deer
    a female deer, especially an adult female red deer
    male red deer in its second year
    Odocoileus hemionus columbianus, black-tailed deer, blacktail, blacktail deer
    mule deer of western Rocky Mountains
    male roe deer
    Rangifer caribou, woodland caribou
    any of several large caribou living in coniferous forests of southern Canada; in some classifications included in the species Rangifer tarandus
    Rangifer arcticus, barren ground caribou
    of tundra of northern Canada; in some classifications included in the species Rangifer tarandus
    type of:
    any of various cud-chewing hoofed mammals having a stomach divided into four (occasionally three) compartments
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