"Twisted", "Coiled." The name for a huge monster of the waters. In Job1 it refers to the crocodile and in Psalms2 it "denotes any large animal that moves by writhing or wriggling the body, the whale, the monsters of the deep." In Isaiah3 it is a sea serpent, the dragon of the sea.
The word is also used figuratively for a cruel enemy, such as the Egyptian host.4
The name is a transliterated Hebrew word (liwyātān), meaning "twisted," or "coiled" (14th century).