Old Testament Hebrew Lexical Dictionary
Strong's #3882 - לִוְיָתָן
לִוְיָתָן (with the adj. termination ־ָן, like נְחֻשְׁתָּן brazen, from נְחשֶׁת, עֲקַלָּתוֹן from עֲקַלָּה), prop. an (animal), wreathed, twisted in folds.
(1) a serpent of a larger kind, Job 3:8 (as to this place see the root עוּר Pilel); Isaiah 27:1 (where it is the symbol of the hostile kingdom of Babylon).
(2) specially, a crocodile, Job 40:25, seq.
(3) any very large aquatic creature, Psalms 104:26 used for a fierce enemy, Psalms 74:14 comp. תַּנִּין Isaiah 51:9; Ezekiel 29:3, 32:2, Ezekiel 32:3. Bochart, Hieroz. P. ii. lib. v. cap. 16-18.
the First Week after Epiphany