Any of numerous extinct elephants widely distributed in the Pleistocene; extremely large with hairy coats and long upcurved tusks WordNet 3.0 & Open English WordNet

A mammoth is any species of the extinct elephantid genus Mammuthus. Wikipedia

Extinct mammal and close relative to the modern elephant. Wikipedia Disambiguation

Extinct genus of mammals Wikidata

A large, hairy, extinct elephant-like mammal. OmegaWiki

Any species of the extinct genus Mammuthus, of large, usually hairy, elephant-like mammals with long curved tusks and an inclined back, which became extinct with the last retreat of ice age glaciers during the late Pleistocene period, and are known from fossils, frozen carcasses, and Paleolithic cave paintings found in North America and Eurasia. Wiktionary