לִוְיָתָן
From LSJ
ξένῳ δὲ σιγᾶν κρεῖττον ἢ κεκραγέναι → it's better for a stranger to keep silence than to shout (Menander)
English (Strong)
from לָוָה; a wreathed animal, i.e. a serpent (especially the crocodile or some other large sea- monster); figuratively, the constellation of the dragon; also as a symbol of Bab.: leviathan, mourning.