Merriam-Webster Online Dictionary
elephant (noun)1.
any of a family (Elephantidae, the elephant family) of thickset usually extremely large nearly hairless herbivorous mammals that have a snout elongated into a muscular trunk and two incisors in the upper jaw developed especially in the male into large ivory tusks and that include two living forms and various extinct relatives as
a) a tall large-eared mammal () of tropical Africa - Loxodonta africana called also African elephant
b) a relatively small-eared mammal () of forests of southeastern Asia - Elephas maximus called also Asian elephant Indian elephant
2.
an animal or fossil related to the - elephants
3.
one that is uncommonly large or hard to manage
Merriam-Webster Online Thesaurus
elephant (noun)something or someone that is unusually large and powerful
SYNONIMS:
behemoth, blockbuster, colossus, dinosaur, dreadnought, elephant, Goliath, jumbo, leviathan, mammoth, mastodon, monster, titan, whale, whopperRELATED WORDS:
amazon, giantess; bulk, hulk; heavyweight; juggernaut, steamrollerNEAR ANTONYMS:
lightweight, weakling, wimp, wisp; nonentity, twerp, whippersnapper