Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun mountain_beaver
1 sense of mountain beaver
Sense 1
mountain beaver, sewellel, Aplodontia rufa -- (bulky nocturnal burrowing rodent of uplands of the Pacific coast of North America; the most primitive living rodent)
=> rodent, gnawer -- (relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing)