Mastodon

n. large elephant-like prehistoric mammal distinguished by its extruding horn-shaped back molars; very large or influential person

Mastodons or Mastodonts (meaning "nipple-teeth") are members of the extinct genus Mammut of the order Proboscidea and form the family Mammutidae; they resembled, but were distinct from, the woolly mammoth which belongs to the family Elephantidae. Mastodons were browsers and mammoths were grazers.
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Noun
1. extinct elephant-like mammal that flourished worldwide from Miocene through Pleistocene times; differ from mammoths in the form of the molar teeth
(synonym) mastodont
(hypernym) proboscidean, proboscidian
(hyponym) American mastodon, American mastodont, Mammut americanum
(member-holonym) Mammut, genus Mammut, genus Mastodon

n. mastodon, large elephant-like prehistoric mammal distinguished by its extruding horn-shaped back molars

n. mastodon