hyoscyamus niger

from WordNet (r) 3.0 (2006)

Hyoscyamus niger
    n 1: poisonous fetid Old World herb having sticky hairy leaves
         and yellow-brown flowers; yields hyoscyamine and
         scopolamine [syn: {henbane}, {black henbane}, {stinking
         nightshade}, {Hyoscyamus niger}]

from The Collaborative International Dictionary of English v.0.48

Hyoscyamine \Hy`os*cy"a*mine\, n. [See {Hyoscyamus}.] (Chem.)
   An alkaloid found in henbane ({Hyoscyamus niger}), and
   regarded as its active principle. It is also found with other
   alkaloids in the thorn apple and deadly nightshade. It is
   extracted as a white crystalline substance, with a sharp,
   offensive taste. Hyoscyamine is isomeric with atropine, is
   very poisonous, and is used as a medicine for neuralgia, like
   belladonna. Called also {hyoscyamia}, {duboisine}, etc.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Hyoscyamus \Hy`os*cy"a*mus\, n. [L., fr. Gr. ?; ? a sow, hog + ?
   a bean.]
   1. (Bot.) A genus of poisonous plants of the Nightshade
      family; henbane.
      [1913 Webster]

   2. (Med.) The leaves of the black henbane ({Hyoscyamus
      niger}), used in neuralgic and pectorial troubles.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Henbane \Hen"bane`\, n. [Hen + bane.] (Bot.)
   A plant of the genus {Hyoscyamus} ({Hyoscyamus niger}). All
   parts of the plant are poisonous, and the leaves are used for
   the same purposes as belladonna. It is poisonous to domestic
   fowls; whence the name. Called also, {stinking nightshade},
   from the fetid odor of the plant. See {Hyoscyamus}.
   [1913 Webster]