Definition of mountain beaver in English:

mountain beaver

noun

  • A burrowing forest-dwelling rodent occurring only on the west coast of North America.

    Aplodontia rufa, the only member of the family Aplodontidae

    Also called sewellel
    • ‘This legislation would have allowed the use of traps on moles, gophers and mountain beavers, and provided additional protections for livestock.’
    • ‘A few years ago, after clearing a slope obscured by fallen trees and nettles for use as a rhododendron glen, they discovered mountain beavers.’