Brown-Driver-Briggs (BDB)
H8565
H8565 תַּנִּין , תַּנִּים , תַּן
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain
Strong's H8565 · Hebrew
tan
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)