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A stout burrowing rodent (Aplodontia rufa) of the Pacific coast of North America, having small eyes and ears and feeding on vegetation such as ferns and tree seedlings. Also called sewellel.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||mountain beaver - bulky nocturnal burrowing rodent of uplands of the Pacific coast of North America; the most primitive living rodent|
gnawer, rodent - relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
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