What is the meaning of Belladonna?

A plant, Atropa belladonna, having purple bell-shaped flowers and poisonous black glossy berries.

An alkaloid extracted from this plant, sometimes used medicinally, containing atropine.

synonym of wolfskers (“deadly nightshade (Atropa belladonna)”)

belladonna, deadly nightshade (Atropa belladonna)

deadly nightshade, belladonna (Atropa belladonna)

belladonna (Atropa belladonna)

alternative form of belladona

Source: wiktionary.org