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mountain beaver

noun

  1. a small, burrowing rodent, Aplodontia rufa, of the Pacific coastal region of North America, considered the most primitive living rodent.


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Word History and Origins

Origin of mountain beaver1

An Americanism dating back to 1880–85

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Example Sentences

The ground squirrel and Point Reyes mountain beaver have been variously identified as Fletcher's "conies."

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