7 letters · 13 points in Scrabble
noun the brown fur of a muskrat
noun beaver-like aquatic rodent of North America with dark glossy brown fur
originPerhaps so called for its musky odour and because it resembles a rat, or perhaps called by an Algonquian name like the Abenaki moskwas, with the spelling altered under the influence of the English words musk and rat.
Etymology from Wiktionary, CC BY-SA 3.0