Red·head n.
 1. A person having red hair.
 2. Zool. (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.
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 Ip·e·cac·u·an·ha n.  Med. & Bot. The root of a Brazilian rubiaceous herb (Cephaëlis 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).
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 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]