Source : Webster's Revised Unabridged Dictionary (1913)

Stramonium \Stra*mo"ni*um\, n. [NL.; Cf. F. stramoine.] (Bot.)
   A poisonous plant ({Datura Stramonium}); stinkweed. See
   {Datura}, and {Jamestown weed}.

Atropine \At"ro*pine\, n. [Gr. ? inflexible; hence ? ?, one of
   the three Parc[ae]; 'a priv. + ? to turn.] (Chem.)
   A poisonous, white, crystallizable alkaloid, extracted from
   the {Atropa belladonna}, or deadly nightshade, and the
   {Datura Stramonium}, or thorn apple. It is remarkable for its
   power in dilating the pupil of the eye. Called also
   {daturine}.

Source : WordNet®

Datura stramonium
     n : intensely poisonous tall coarse annual tropical weed having
         rank-smelling foliage, large white or violet
         trumpet-shaped flowers and prickly fruits [syn: {jimsonweed},
          {jimson weed}, {Jamestown weed}, {common thorn apple}, {apple
         of Peru}]