Found 3 Strong's definitions.

1. 1

   G2785: κῆτος (kētos)

   probably from the base of χάσμα; a huge fish (as gaping for prey):--whale.

   100%
2. 2

   H8565: תַּן (tan)

   from an unused root probably meaning to elongate; a monster (as preternaturally formed), i.e. a sea-serpent (or other huge marine animal); also a jackal (or other hideous land animal); dragon, whale. Compare תַּנִּין.

   1%
3. 3

   H8415: תְּהוֹם (tᵉhôwm)

   or תְּהֹם; (usually feminine) from הוּם; an abyss (as a surging mass of water), especially the deep (the main sea or the subterranean watersupply); deep (place), depth.

   1%