'Xylostein' definitions:

Definition of 'Xylostein'

From: GCIDE

Xylostein \Xy*los"te*in\, n. [Xylo- + Gr. 'oste`on bone.] (Chem.) A glucoside found in the poisonous berries of a species of honeysuckle (Lonicera xylosteum), and extracted as a bitter, white, crystalline substance. [1913 Webster]