Bryonin \Bry"o*nin\, n. (Chem.)
A bitter principle obtained from the root of the bryony
({Bryonia alba} and {B. dioica}). It is a white, or slightly
colored, substance, and is emetic and cathartic.
Bryonia alba
n : white-flowered vine having thick roots and bearing small
black berries; Europe to Iran [syn: {white bryony}, {devil's
turnip}]