The Collaborative International Dictionary of English v.0.48:

Nightshade \Night"shade`\, n. [AS. nichtscadu.] (Bot.)
   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.
   [1913 Webster]

   Deadly nightshade. Same as Belladonna
   (a) .

   Enchanter's nightshade. See under Enchanter.

   Stinking nightshade. See Henbane.

   Three-leaved nightshade. See Trillium.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Enchanter \En*chant"er\, n. [Cf. F. enchanteur.]
   One who enchants; a sorcerer or magician; also, one who
   delights as by an enchantment.
   [1913 Webster]

         Like ghosts from an enchanter fleeing.   --Shelley.
   [1913 Webster]

   Enchanter's nightshade (Bot.), a genus (Circ[ae]a) of low
      inconspicuous, perennial plants, found in damp, shady
      places.
      [1913 Webster]