Belladonna
a European plant, atropa belladonna, or deadly nightshade, natural order solanaceæ. It is native in Great Britain. All parts of the plant are poisonous. The inspissated juice is commonly known by the name of extract of belladonna. It is narcotic and poisonous, BELLES-LETTRES but is of great value in medicine, especially in nervous ailments. It has the property of causing the pupil of the eye to dilate. The fruit of the plant is a dark, brownish-black shining berry.