Source : Webster's Revised Unabridged Dictionary (1913)

Parillin \Pa*ril"lin\, n. [Shortened fr. sarsaparillin.] (Chem.)
   A glucoside resembling saponin, found in the root of
   sarsaparilla, smilax, etc., and extracted as a bitter white
   crystalline substance; -- called also {smilacin},
   {sarsaparilla saponin}, and {sarsaparillin}.