jamestown weed(n = noun.plant) apple of peru, common thorn apple, datura stramonium, jimson weed, jimsonweed - intensely poisonous tall coarse annual tropical weed having rank-smelling foliage, large white or violet trumpet-shaped flowers and prickly fruits;
is a kind of thorn apple

   The poisonous thorn apple or stramonium (Datura stramonium), a rank weed early noticed at Jamestown, Virginia. See Datura. [1913 Webster]
" This name is often corrupted into jimson, jimpson, and gympsum." [1913 Webster]

ague weed, alligator weed, butterfly weed, cancer weed, consumption weed, crazy weed, devil's weed, dill weed, dyer's weed, french weed, ghost weed, horsefly weed, jamestown, jimson weed, joe-pye weed, klammath weed, mad-dog weed, orchilla weed, pickerel weed, pineapple weed, polecat weed, rattle weed, rattlesnake weed, rheumatism weed, scorpion weed, spotted joe-pye weed, stemless golden weed, stinking weed, styptic weed, trumpet weed, turpentine camphor weed, turpentine weed, weed, weed killer, weed out