Source : Webster's Revised Unabridged Dictionary (1913)

Serpentaria \Ser`pen*ta"ri*a\, a.[L. (sc. herba), fr. serpens
   serpent.] (Med.)
   The fibrous aromatic root of the Virginia snakeroot
   ({Aristolochia Serpentaria}).

Snakeroot \Snake"root`\, n. (Bot.)
   Any one of several plants of different genera and species,
   most of which are (or were formerly) reputed to be
   efficacious as remedies for the bites of serpents; also, the
   roots of any of these.

   Note: The Virginia snakeroot is {Aristolochia Serpentaria};
         black snakeroot is {Sanicula}, esp. {S. Marilandica},
         also {Cimicifuga racemosa}; Seneca snakeroot is
         {Polygala Senega}; button snakeroot is {Liatris}, also
         {Eryngium}; white snakeroot is {Eupatorium
         ageratoides}. The name is also applied to some others
         besides these.

Source : WordNet®

Aristolochia serpentaria
     n : birthwort of the eastern United States woodlands [syn: {Virginia
         snakeroot}, {Virginia serpentaria}, {Virginia serpentary}]