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.
Verse
Matrix
Jer 31:21Set thee up waymarks, make thee high heapsH8564: set thine heart toward the highway, even the way which thou wentest: turn again, O virgin of Israel, turn again to these thy cities.