n.
Pronunciation: ˌ be-l ə - ' dä-n ə
Function: noun
Etymology: Italian, literally, beautiful lady
Date: 1597
1 : an Old World poisonous plant ( Atropa belladonna ) of the nightshade family having purple or green bell-shaped flowers, glossy black berries, and root and leaves that yield atropine ― called also deadly nightshade
2 : a medicinal extract (as atropine) from the belladonna plant