a kind of arboreal rodent having a long bushy tail
source: WordNet 3.0
the fur of a squirrel
source: WordNet 3.0
Any one of numerous species of small rodents belonging to the genus Sciurus and several allied genera of the family Sciuridæ. Squirrels generally have a bushy tail, large erect ears, and strong hind legs. They are commonly arboreal in their habits, but many species live in burrows.