Definition of chinchilla
1
: either of two small South American rodents (Chinchilla laniger and C. brevicaudata 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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Time Traveler for chinchilla
The first known use of chinchilla was in 1604
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