mule deer

noun

: a long-eared deer (Odocoileus hemionus) of western North America that is larger and more heavily built than the white-tailed deer

Illustration of mule deer

Illustration of mule deer

Examples of mule deer in a Sentence

Recent Examples on the Web
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The mule deer have been part of the island’s ecosystem for 100 years and have become a favorite of many of the island residents. Steve Scauzillo, Daily News, 9 Mar. 2026 Even mule deer and elk were running low. Christine Peterson, Outdoor Life, 5 Mar. 2026 That further protects mule deer as well as possibly protecting people. Ted Williams, Denver Post, 24 Feb. 2026 The Idaho Department of Fish and Game is investigating three incidents of poaching involving mule deer bucks near Boise that have happened in recent months, according to a news release from the agency. Nicole Blanchard, Idaho Statesman, 17 Feb. 2026 See All Example Sentences for mule deer

Word History

First Known Use

1805, in the meaning defined above

Time Traveler
The first known use of mule deer was in 1805

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Cite this Entry

“Mule deer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mule%20deer. Accessed 13 Mar. 2026.

Kids Definition

mule deer

noun
: a long-eared deer of western North America that is larger and more heavily built than the white-tailed deer

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