Zool. Also biz-, vis-. [a. Sp. biscacho.] A species of the Chinchillidæ, a burrowing rodent of South America.
a. 1837. Bennett in Penny Cycl., VII. 88/1. The Biscachas live in society, in burrows.
1847. Carpenter, Zool., § 235. The burrows of the Viscacha are also inhabited by small owls.
1859. Darwin, Orig. Spec., xiv. (1878), 379. Of all Rodents the bizcacha is most nearly related to the Marsupials.