hogweed

from WordNet (r) 3.0 (2006)

hogweed
    n 1: tall coarse plant having thick stems and cluster of white
         to purple flowers [syn: {cow parsnip}, {hogweed},
         {Heracleum sphondylium}]

from The Collaborative International Dictionary of English v.0.48

Hogweed \Hog"weed`\, n. (Bot.)
      (a) A common weed ({Ambrosia artemisi[ae]ge}). See
          {Ambrosia}, 3.
      (b) In England, the {Heracleum Sphondylium}.
          [1913 Webster]

[email protected]