Webster’s Revised Unabridged Dictionary · 1913
Parillin
Pa·ril′lin (pȧ·rĭl′lĭn), 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.