- leviathan - the largest or most massive thing of its kind; "it was a leviathan among redwoods"; "they were assigned the leviathan of textbooks"
--1 is a kind of freak, monster, monstrosity, lusus naturae
- leviathan - monstrous sea creature symbolizing evil in the Old Testament
--2 is a kind of mythical monster, mythical creature
- leviathan - monstrous sea creature symbolizing evil in the Old Testament