'Hydrastine' definitions:

Definition of 'Hydrastine'

From: GCIDE

Hydrastine \Hy*dras"tine\, n. (Chem.) An alkaloid, found in the rootstock of the golden seal (Hydrastis Canadensis), and extracted as a bitter, white, crystalline substance. It is used as a tonic and febrifuge. [1913 Webster]