mammoth

Any of various extinct elephants of the genus Mammuthus of the Pliocene, Pleistocene, and Holocene Epochs, having ridged molars and often, as in the woolly mammoth, long tusks and hair.

Something that is of great size.

Of enormous size, extent, or amount; huge. synonym: enormous.

Of great scope or importance.

An extinct species of elephant, Elephas primigenius.