Definitions
1.NounA Eurasian species of nightshade with black berries, Solanum nigrum, of Europe.
2.NounOther similar members of a group of closely-related species from the Solanum nigrum complex:
Solanum americanum (American black nightshade) of much of North America
Solanum ptychanthum (eastern black nightshade) of the Caribbean region.
3.NounSolanum americanum (American black nightshade) of much of North America
4.NounSolanum ptychanthum (eastern black nightshade) of the Caribbean region.