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two-toed sloth

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noun
  1. either of two sloths of the genus Choloepus, having two claws on the forelimbs and three on the hind limbs, including C. didactylus and C. hoffmanni.

Origin of two-toed sloth

First recorded in 1765–75
Also called u·nau, u·nai [yoo-naw, oo-nou] /yuˈnɔ, uˈnaʊ/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for unau

unau

noun
  1. the two-toed slothSee sloth (def. 1)

Word Origin

C18: via French from Tupi
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012