Leviathan

1. (n.) A large aquatic animal or vessel; a whale; a sea monster; an aquatic animal, described in the book of Job, ch. xli., and mentioned in other passages of Scripture.

2. (n.) The whale, or a great whale.

Thesaurus Entries

argosy, bark, boat, bottom, bucket, craft, cyclopean, dinosaur, elephant, elephantine, enormous, gargantuan, giant, gigantic, hippo, hippopotamus, hooker, hulk, hull, immense, jumbo, keel, mammoth, mastodon, monster, packet, ship, tub, vessel, watercraft, whale