1. Two-toed sloth species with two long claws on each front foot, native to South America
   "The unau descended from the tree to defecate";
   - two-toed sloth, unai, Choloepus didactylus
    
2. A sloth of Central America that has two long claws on each forefoot and three long claws on each hindfoot
   "Hoffmann's unau hung upside down from the branch";
   - two-toed sloth, unai, Choloepus hoffmanni

Derived forms: unaus

Type of: sloth, tree sloth

Part of: Choloepus, genus Choloepus

Encyclopedia: Unau