Source : Webster's Revised Unabridged Dictionary (1913)

Jervine \Jer"vine\, n. [Prob. fr. Sp. yerba herb, OSp., the
   poison of the veratrum.] (Chem.)
   A poisonous alkaloid resembling veratrine, and found with it
   in white hellebore ({Veratrum album}); -- called also
   {jervina}.

Veratric \Ve*ra"tric\, a. (Chem.)
   Pertaining to, or derived from, plants of the genus Veratrum.

   {Veratric acid} (Chem.), an acid occurring, together with
      veratrine, in the root of white hellebore ({Veratrum
      album}), and in sabadilla seed; -- extracted as a white
      crystalline substance which is related to protocatechuic
      acid.