Strong's H6848 · Hebrew

tsepha`

tseh'-fah;

from an unused root meaning to extrude; a viper (as thrusting out the tongue, i.e. hissing)

Scholarly Lexicons

Brown-Driver-Briggs (BDB)

 H6848a צֶ֫פַע a (poisonous) serpent H6848b צִפְעוֹנִי id . [ 6848a ]  

Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain