COYPU
coypu, nutria, Myocastor coypus
(noun) aquatic South American rodent resembling a small beaver; bred for its fur
Source: WordNet® 3.1
Etymology
Noun
coypu (plural coypus or coypu)
A large, crepuscular, semiaquatic rodent (Myocastor coypus) resembling a large rat, having bright orange-yellow incisors, native to South America and introduced to Europe, Asia and North America, valued for its fur in eastern Europe and central Asia and considered a pest elsewhere.
Synonyms
• nutria (especially North America)
Source: Wiktionary
Coy"pu (koi"p), n. Etym: [Native name.] (Zoöl.)
Definition: A South American rodent (Myopotamus coypus), allied to the
beaver. It produces a valuable fur called nutria. [Written also
coypou.]
Source: Webster’s Unabridged Dictionary 1913 Edition