pocket mouse

noun

Definition of pocket mouse 

: any of various nocturnal burrowing rodents (family Heteromyidae) that resemble mice, live in arid parts of western North America, and have long hind legs and tail and fur-lined cheek pouches

Illustration of pocket mouse

Illustration of pocket mouse

First Known Use of pocket mouse

1877, in the meaning defined above

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The first known use of pocket mouse was in 1877

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