mountain beaver definition

  • noun:
    • See sewellel.
    • A rodent found on the west shore of North America, taxonomic title Aplodontia rufa. It is not the main beaver household.
    • The sewellel, Haplodon rufus. See sewellel, and cut-under Haplodon.
    • large nocturnal burrowing rodent of uplands for the Pacific coastline of united states; the absolute most primitive living rodent
  • adjective:
    • the sewellel.

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