chinchilla /t͡ʃɪnˈt͡ʃɪlə/ noun3 •A small, crepuscular rodent of the genus Chinchilla, native to the Andes Mountains, prized for their very soft fur and often kept as pets.It's important to put a lot of thought into owning a chinchilla since they have a considerably long lifespan of 10 to 20 years. Chinchillas are most widely known for their exceptional fur coat. — 2004 •The fur of a chinchilla, used for clothing. •A variety of Persian cat with white fur and green eyes. formschinchillas