stinkweed

from WordNet (r) 3.0 (2006)

stinkweed
    n 1: foetid Eurasian weed having round flat pods; naturalized
         throughout North America [syn: {field pennycress}, {French
         weed}, {fanweed}, {penny grass}, {stinkweed}, {mithridate
         mustard}, {Thlaspi arvense}]

from The Collaborative International Dictionary of English v.0.48

Stinkweed \Stink"weed`\, n. (Bot.)
   Stramonium. See {Jamestown weed}, and {Datura}.
   [1913 Webster]