1. (noun)two-toed sloth, unau, unai, Choloepus hoffmanni a sloth of Central America that has two long claws on each forefoot and three long claws on each hindfoot Synonyms: unai, unau, two-toed sloth
2. (noun)two-toed sloth, unau, unai, Choloepus didactylus relatively small fast-moving sloth with two long claws on each front foot Synonyms: unai, unau, two-toed sloth