תַּן (tantannoun|masculineserpent)
[Heb] תַּן ETCBC: תַּן‎ (subs|jackal) OSHL: w.be.ac TWOT: 2528a GK: H9478
Derivation: from an unused root probably meaning to elongate;
Strong's: a monster (as preternaturally formed), i.e. a sea-serpent (or other huge marine animal); also a jackal (or other hideous land animal)
KJV: dragon, whale. Compare תַּנִּין.