Webster's Revised Unabridged Dictionary · 1913

Nightshade

Nightshade , noun

[Anglo-Saxon nichtscadu.]

(Botany) A common name of many species of the genus Solanum, given esp. to the Solanum nigrum, or black nightshade, a low, branching weed with small white flowers and black berries reputed to be poisonous.
Collocations (4)
Deadly nightshade , Same as Belladonna (a).
Enchanter's nightshade , See under Enchanter.
Stinking nightshade , See Henbane.
Three-leaved nightshade , See Trillium.