1
: either of two small South American rodents (Chinchilla lanigera and C. chinchilla of the family Chinchillidae) of the high Andes that are the size of large squirrels, have very soft pearly-gray fur, and are extensively bred in captivity
also
: the fur of a chinchilla
2
: a heavy twilled woolen coating
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Merriam-Webster unabridged
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