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mountain beaver
noun
- 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."
From Project Gutenberg
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