Definition of "ondatra" []

• The muskrat. (noun)

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• "Voyaging along the margin of a lake, we may see on the shores numbers of little flattened oval nests composed of reeds and sedges, while numerous holes in the bank, with quantities of shells, chiefly of the fresh-water mussel, scattered round, show the entrance to the habitations of the musquash, or ondatra, called also the musk-rat."