Dict: strongs - monster

Strongs:

H3882 @ 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.

H8565 @ תּן tan tan From an unused root probably meaning to elongate; a monster (as preternaturally {formed}) that {is} a sea serpent (or other huge marine animal); also a jackal (or other hideous land animal): - {dragon} whale. Compare H8577.

H8577 @ תּנּים תּנּין tannîyn tannîym {tan-neen'} tan-neem' (The second form used in ); intensive from the same as H8565; a marine or land {monster} that {is} sea serpent or jackal: - {dragon} {sea-monster} {serpent} whale.