Bry·o·nin n. Chem. A bitter principle obtained from the root of the bryony (Bryonia alba and Bryonia dioica). It is a white, or slightly colored, substance, and is emetic and cathartic.
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Bry·o·ny n. Bot. The common name of several cucurbitaceous plants of the genus Bryonia. The root of Bryonia alba (rough bryony or white bryony) and of Bryonia dioica is a strong, irritating cathartic.
Black bryony, a plant (Tamus communis) so named from its dark glossy leaves and black root; black bindweed.
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Bryonia dioica
n : bryony having fleshy roots pale green flowers and very small
red berries; Europe; North Africa; western Asia [syn: red
bryony, wild hop]