: any of various slender-legged, even-toed, ruminant mammals (family Cervidae, the deer family) having usually brownish fur and deciduous antlers borne by the males of nearly all and by the females only of the caribou : cervid
The meaning of a word often develops from the general to the specific. For instance, deer is used in modern English to mean several related forms of an animal species, including white-tailed deer, mule deer, elk, and moose. The Old English deor, however, could refer to any animal, tame or wild, or to wild animals in general. In time, deer came to be used only for wild animals that were hunted, and then for the red deer, once widely hunted in England. From that usage the term has spread to related animals, becoming somewhat more general again.
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Most mammals—but not humans—contain alpha gal, so someone with alpha-gal syndrome will likely have an allergic reaction to consuming meat from cows, pigs, lambs, goats, and deer.—
Alice Park,
Time,
23 July 2026 If there are wild turkeys as well as deer, the lease is more valuable.—
Jack O'Connor,
Outdoor Life,
23 July 2026 It's called the Buck Moon because male deer, which are known as bucks, will see significant growth in their antlers throughout this time, according to the almanac.—
Julia Gomez,
USA Today,
23 July 2026 What appealed to me initially about the property was the modern, castle-like appearance of the building itself, and the occasional bunny or deer crossing the grounds added to the fairy-tale-esque vibe.—
Condé Nast,
Condé Nast Traveler,
22 July 2026 See All Example Sentences for deer
Word History
Etymology
Middle English, deer, animal, from Old English dēor beast; akin to Old High German tior wild animal, Lithuanian dvasia breath, spirit
First Known Use
before the 12th century, in the meaning defined at sense 1
Time Traveler
The first known use of deer was
before the 12th century
: any of a family of cloven-hoofed cud-chewing mammals (as an elk, a caribou, or a white-tailed deer) of which the males of almost all species have antlers while the females of only a few species do
Etymology
Old English dēor "wild animal, beast"
Word Origin
The meaning of a word often develops from the general to the specific. For instance, deer is used in modern English to mean several related forms, including white-tailed deer, mule deer, elk, and moose. The Old English dēor, however, could refer to any animal, tame or wild, or to wild animals in general. In time, deer came to be used only for wild animals that were hunted and then for the red deer, once widely hunted in England. From that usage the term has spread to related animals, becoming somewhat more general again.