| Noun | 1. | genus Atropa - belladonna asterid dicot genus - genus of more or less advanced dicotyledonous herbs and some trees and shrubs family Solanaceae, potato family, Solanaceae - large and economically important family of herbs or shrubs or trees often strongly scented and sometimes narcotic or poisonous; includes the genera Solanum, Atropa, Brugmansia, Capsicum, Datura, Hyoscyamus, Lycopersicon, Nicotiana, Petunia, Physalis, and Solandra Atropa belladonna, belladonna, belladonna plant, deadly nightshade - perennial Eurasian herb with reddish bell-shaped flowers and shining black berries; extensively grown in United States; roots and leaves yield atropine |