Synonyms and related words :
Jumbo, blimp, dinosaur, elephant, fatty, hathi, heavy, heavyweight, hippopotamus, jumbo, leviathan, lump, mammoth, mastodon, monster, pachyderm, potbelly, rhino, rhinoceros, river horse, roly-poly, swagbelly, tub, tub of lard, tun, whale, woolly mammoth