לויתן
livyâthân
liv-yaw-thawn'
From H3867; a wreathed animal, that is, a serpent (especially the crocodile or some other large sea monster); figuratively the constellation of the dragon ; also as a symbol of Babylon: - leviathan, mourning.
LXX related word(s)
G1404 drakon
G2785 ketos
G3173 megas