from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various massive extinct edentates, especially of the genus Megatherium, inhabiting South America during the Pleistocene Epoch and related to the sloths. Also called giant ground sloth.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America


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