Source : Webster's Revised Unabridged Dictionary (1913)

Picrotoxin \Pic`ro*tox"in\, n. [Gr. ? bitter + toxic + -in.]
   (Chem.)
   A bitter white crystalline substance found in the cocculus
   indicus. It is a peculiar poisonous neurotic and intoxicant,
   and consists of a mixture of several neutral substances.