Source : Webster's Revised Unabridged Dictionary (1913)

Ipecacuanha \Ip`e*cac`u*an"ha\, n. [Pg. ipecacuanha (cf. Sp.
   ipecacuana); fr. Braz. ipe-kaa-guena, prop., a creeping plant
   that causes vomiting.] (Med. & Bot.)
   The root of a Brazilian rubiaceous herb ({Cepha["e]lis
   Ipecacuanha}), largely employed as an emetic; also, the plant
   itself; also, a medicinal extract of the root. Many other
   plants are used as a substitutes; among them are the black or
   Peruvian ipecac ({Psychotria emetica}), the white ipecac
   ({Ionidium Ipecacuanha}), the bastard or wild ipecac
   ({Asclepias Curassavica}), and the undulated ipecac
   ({Richardsonia scabra}).

Redhead \Red"head`\ (-h?d`), n.
   1. A person having red hair.

   2. (Zo["o]l.)
      (a) An American duck ({Aythya Americana}) highly esteemed
          as a game bird. It is closely allied to the
          canvasback, but is smaller and its head brighter red.
          Called also {red-headed duck}. {American poachard},
          {grayback}, and {fall duck}. See Illust. under
          {Poachard}.
      (b) The red-headed woodpecker. See {Woodpecker}.

   3. (Bot.) A kind of milkweed ({Asclepias Curassavica}) with
      red flowers. It is used in medicine.

Source : WordNet®

Asclepias curassavica
     n : tropical herb having orange-red flowers followed by pods
         suggesting a swallow with outspread wings; a weed
         throughout the tropics [syn: {blood flower}, {swallowwort}]