desman definition by Webster's New World
Origin: ; from Swedish desman-råtta ; from desman, musk plush råtta, rat
desman definition by American Heritage Dictionary
noun pl. des·mans
Origin: Short for Swedish desmanråtta, muskrat : desman, musk (from Middle Low German desem, from Medieval Latin bisamum, of Semitic origin; see bśm in Semitic roots) + råtta, rat (akin to Old English rǽt).