a small gregarious hystricomorph rodent, Chinchilla laniger, inhabiting mountainous regions of South America: family Chinchillidae. It has a stocky body and is bred in captivity for its soft silvery grey fur
2.
the highly valued fur of this animal
3.
mountain chinchilla, mountain viscacha any of several long-tailed rodents of the genus Lagidium, having coarse poor quality fur