Cow parsnip

from WordNet (r) 3.0 (2006)

cow parsnip
    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

Parsnip \Pars"nip\ (p[aum]rs"n[i^]p), n. [OE. parsnepe, from a
   French form, fr. L. pastinaca; cf. pastinare to dig up,
   pastinum a kind of dibble; cf. OF. pastenade, pastenaque.]
   (Bot.)
   The aromatic and edible spindle-shaped root of the cultivated
   form of the {Pastinaca sativa}, a biennial umbelliferous
   plant which is very poisonous in its wild state; also, the
   plant itself.
   [1913 Webster]

   {Cow parsnip}. See {Cow parsnip}.

   {Meadow parsnip}, the European cow parsnip.

   {Poison parsnip}, the wild stock of the parsnip.

   {Water parsnip}, any plant of the umbelliferous genus {Sium},
      the species of which are poisonous.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Masterwort \Mas"ter*wort`\, n. (Bot.)
   (a) A tall and coarse European umbelliferous plant
       ({Peucedanum Ostruthium}, formerly {Imperatoria}).
   (b) The {Astrantia major}, a European umbelliferous plant
       with a showy colored involucre.
   (c) Improperly, the {cow parsnip} ({Heracleum lanatum}).
       [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Cow parsnip \Cow" pars`nip\ (-n?p). (Bot.)
   A coarse umbelliferous weed of the genus {Heracleum}
   ({Heracleum sphondylium} in England, and {Heracleum lanatum}
   in America).
   [1913 Webster]