The Collaborative International Dictionary of English v.0.48:

Guinea \Guin"ea\ (g[i^]n"[-e]), n.
   1. A district on the west coast of Africa (formerly noted for
      its export of gold and slaves) after which the Guinea
      fowl, Guinea grass, Guinea peach, etc., are named.
      [1913 Webster]

   2. A gold coin of England current for twenty-one shillings
      sterling, or about five dollars, but not coined since the
      issue of sovereigns in 1817.
      [1913 Webster]

            The guinea, so called from the Guinea gold out of
            which it
            was first struck, was proclaimed in 1663, and to go
            for twenty shillings; but it never went for less
            than twenty-one shillings.            --Pinkerton.
      [1913 Webster]

   Guinea corn. (Bot.) See Durra.

   Guinea Current (Geog.), a current in the Atlantic Ocean
      setting southwardly into the Bay of Benin on the coast of
      Guinea.

   Guinea dropper one who cheats by dropping counterfeit
      guineas. [Obs.] --Gay.

   Guinea fowl, Guinea hen (Zool.), an African gallinaceous
      bird, of the genus Numida, allied to the pheasants. The
      common domesticated species (Numida meleagris), has a
      colored fleshy horn on each aide of the head, and is of a
      dark gray color, variegated with small white spots. The
      crested Guinea fowl (Numida cristata) is a finer
      species.

   Guinea grains (Bot.), grains of Paradise, or amomum. See
      Amomum.

   Guinea grass (Bot.), a tall strong forage grass (Panicum
      jumentorum) introduced. from Africa into the West Indies
      and Southern United States.

   Guinea-hen flower (Bot.), a liliaceous flower (Fritillaria
      Meleagris) with petals spotted like the feathers of the
      Guinea hen.

   Guinea peach. See under Peach.

   Guinea pepper (Bot.), the pods of the Xylopia aromatica,
      a tree of the order Anonace[ae], found in tropical West
      Africa. They are also sold under the name of Piper
      aethiopicum.

   Guinea plum (Bot.), the fruit of Parinarium excelsum, a
      large West African tree of the order Chrysobalane[ae],
      having a scarcely edible fruit somewhat resembling a plum,
      which is also called gray plum and rough-skin plum.

   Guinea worm (Zool.), a long and slender African nematoid
      worm (Filaria Medinensis) of a white color. It lives in
      the cellular tissue of man, beneath the skin, and produces
      painful sores.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Indian \In"di*an\ (?; 277), a. [From India, and this fr. Indus,
   the name of a river in Asia, L. Indus, Gr. ?, OPers. Hindu,
   name of the land on the Indus, Skr. sindhu river, the Indus.
   Cf. Hindu.]
   [1913 Webster]
   1. Of or pertaining to India proper; also to the East Indies,
      or, sometimes, to the West Indies.
      [1913 Webster]

   2. Of or pertaining to the aborigines, or Indians, of
      America; as, Indian wars; the Indian tomahawk.
      [1913 Webster]

   3. Made of maize or Indian corn; as, Indian corn, Indian
      meal, Indian bread, and the like. [U.S.]
      [1913 Webster]

   Indian bay (Bot.), a lauraceous tree (Persea Indica).

   Indian bean (Bot.), a name of the catalpa.

   Indian berry. (Bot.) Same as Cocculus indicus.

   Indian bread. (Bot.) Same as Cassava.

   Indian club, a wooden club, which is swung by the hand for
      gymnastic exercise.

   Indian cordage, cordage made of the fibers of cocoanut
      husk.

   Indian cress (Bot.), nasturtium. See Nasturtium, 2.

   Indian cucumber (Bot.), a plant of the genus Medeola
      (Medeola Virginica), a common in woods in the United
      States. The white rootstock has a taste like cucumbers.

   Indian currant (Bot.), a plant of the genus
      Symphoricarpus (Symphoricarpus vulgaris), bearing
      small red berries.

   Indian dye, the puccoon.

   Indian fig. (Bot.)
      (a) The banyan. See Banyan.
      (b) The prickly pear.

   Indian file, single file; arrangement of persons in a row
      following one after another, the usual way among Indians
      of traversing woods, especially when on the war path.

   Indian fire, a pyrotechnic composition of sulphur, niter,
      and realgar, burning with a brilliant white light.

   Indian grass (Bot.), a coarse, high grass (Chrysopogon
      nutans), common in the southern portions of the United
      States; wood grass. --Gray.

   Indian hemp. (Bot.)
      (a) A plant of the genus Apocynum (Apocynum
          cannabinum), having a milky juice, and a tough,
          fibrous bark, whence the name. The root it used in
          medicine and is both emetic and cathartic in
          properties.
      (b) The variety of common hemp (Cannabis Indica), from
          which hasheesh is obtained.

   Indian mallow (Bot.), the velvet leaf (Abutilon
      Avicenn[ae]). See Abutilon.

   Indian meal, ground corn or maize. [U.S.]

   Indian millet (Bot.), a tall annual grass (Sorghum
      vulgare), having many varieties, among which are broom
      corn, Guinea corn, durra, and the Chinese sugar cane. It
      is called also Guinea corn. See Durra.

   Indian ox (Zool.), the zebu.

   Indian paint. See Bloodroot.

   Indian paper. See India paper, under India.

   Indian physic (Bot.), a plant of two species of the genus
      Gillenia (Gillenia trifoliata, and Gillenia
      stipulacea), common in the United States, the roots of
      which are used in medicine as a mild emetic; -- called
      also American ipecac, and bowman's root. --Gray.

   Indian pink. (Bot.)
      (a) The Cypress vine (Ipom[oe]a Quamoclit); -- so called
          in the West Indies.
      (b) See China pink, under China.

   Indian pipe (Bot.), a low, fleshy herb (Monotropa
      uniflora), growing in clusters in dark woods, and having
      scalelike leaves, and a solitary nodding flower. The whole
      plant is waxy white, but turns black in drying.

   Indian plantain (Bot.), a name given to several species of
      the genus Cacalia, tall herbs with composite white
      flowers, common through the United States in rich woods.
      --Gray.

   Indian poke (Bot.), a plant usually known as the white
      hellebore (Veratrum viride).

   Indian pudding, a pudding of which the chief ingredients
      are Indian meal, milk, and molasses.

   Indian purple.
      (a) A dull purple color.
      (b) The pigment of the same name, intensely blue and
          black.

   Indian red.
      (a) A purplish red earth or pigment composed of a silicate
          of iron and alumina, with magnesia. It comes from the
          Persian Gulf. Called also Persian red.
      (b) See Almagra.

   Indian rice (Bot.), a reedlike water grass. See Rice.

   Indian shot (Bot.), a plant of the genus Canna (Canna
      Indica). The hard black seeds are as large as swan shot.
      See Canna.

   Indian summer, in the United States, a period of warm and
      pleasant weather occurring late in autumn. See under
      Summer.

   Indian tobacco (Bot.), a species of Lobelia. See
      Lobelia.

   Indian turnip (Bot.), an American plant of the genus
      Aris[ae]ma. Aris[ae]ma triphyllum has a wrinkled
      farinaceous root resembling a small turnip, but with a
      very acrid juice. See Jack in the Pulpit, and
      Wake-robin.

   Indian wheat, maize or Indian corn.

   Indian yellow.
      (a) An intense rich yellow color, deeper than gamboge but
          less pure than cadmium.
      (b) See Euxanthin.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Durra \Dur"ra\, n. [Ar. dhorra.] (Bot.)
   A kind of millet, cultivated throughout Asia, and introduced
   into the south of Europe; a variety of Sorghum vulgare; --
   called also Indian millet, and Guinea corn. [Written also
   dhoorra, dhurra, doura, etc.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

Guinea corn
    n 1: sorghums of dry regions of Asia and North Africa [syn:
         durra, doura, dourah, Egyptian corn, Indian
         millet, Guinea corn]