megathere

Noun

meg=a=there

WORDNET DICTIONARY

megathere(n = noun.animal) ground sloth - gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America;

is a kind of megatherian, megatherian mammal, megatheriid

is a member of genus megatherium, megatherium

megathere, n. [NL. megatherium, fr. Gr. me`gas great + qhri`on beast.].

An extinct gigantic quaternary mammal, allied to the ant-eaters and sloths. Its remains are found in South America. [1913 Webster]