Source : Webster's Revised Unabridged Dictionary (1913)

Jimson weed \Jim"son weed`\
   See {Jamestown weed}. [Local, U.S.]

Source : WordNet®

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