nightshade

noun4

1. •
   Any of the poisonous plants belonging to the genus Solanum, especially black nightshade or woody nightshade.
2. •
   Belladonna or deadly nightshade (Atropa belladonna).
3. •
   (informal) Any plant of the wider Solanaceae family, including the nightshades as well as tomato, potato, eggplant, and deadly nightshade.
4. •
   Any of several plants likened to nightshade, usually because of similar dark-colored berries.