Webster’s Revised Unabridged Dictionary · 1913
Cavy
Ca′vy (kā′vy̆), n.; pl. Cavies. [NL. cavia, fr. Brazilian cabiai: cf. F. cabiai.] (Zoöl.) A rodent of the genera Cavia and Dolichotis, as the guinea pig (Cavia cobaya). Cavies are natives of South America.
Water cavy (Zoöl.), The capybara.