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Definition of mule deer
mule deer
Plural:mule deer
mule deer Lexical Profile
CEFR
B2
Grade
6
Tier
2
Usage
Rare
• noun
1
North American A species of medium-sized deer native to western North America, characterized by large, prominent ears, a black-tipped tail, and antlers that fork evenly as they grow.
Example
"During our hike through the Rocky Mountains, we quietly observed a small herd of mule deer grazing among the sagebrush."
Word Nuance & Usage
Often distinguished from the closely related white-tailed deer by its prominent ears, bifurcating antlers, and black-tipped tail.
Word Origin & Etymology
Named in the early 19th century by American explorers, notably the Lewis and Clark expedition, due to the animal's distinctively large ears which resemble those of a mule.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Mule deer. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/mule deer