lemming mouse

noun

Definition of lemming mouse

  1. 1 :  any of several small rodents of the genus Synaptomys that are confined to northern North America and resemble the voles (genus Microtus) but have a very short tail and peculiar teeth — see bog lemming

  2. 2 :  any of a number of North American voles (genus Phenacomys) related to the muskrat

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