Source : Webster's Revised Unabridged Dictionary (1913)

Pepper \Pep"per\, n. [OE. peper, AS. pipor, L. piper, fr. Gr. ?,
   ?, akin to Skr. pippala, pippali.]
   1. A well-known, pungently aromatic condiment, the dried
      berry, either whole or powdered, of the {Piper nigrum}.

   Note: Common, or black, pepper is made from the whole berry,
         dried just before maturity; white pepper is made from
         the ripe berry after the outer skin has been removed by
         maceration and friction. It has less of the peculiar
         properties of the plant than the black pepper. Pepper
         is used in medicine as a carminative stimulant.

   2. (Bot.) The plant which yields pepper, an East Indian woody
      climber ({Piper nigrum}), with ovate leaves and apetalous
      flowers in spikes opposite the leaves. The berries are red
      when ripe. Also, by extension, any one of the several
      hundred species of the genus {Piper}, widely dispersed
      throughout the tropical and subtropical regions of the
      earth.

   3. Any plant of the genus Capsicum, and its fruit; red
      pepper; as, the bell pepper.

   Note: The term pepper has been extended to various other
         fruits and plants, more or less closely resembling the
         true pepper, esp. to the common varieties of
         {Capsicum}. See {Capsicum}, and the Phrases, below.

   {African pepper}, the Guinea pepper. See under {Guinea}.

   {Cayenne pepper}. See under {Cayenne}.

   {Chinese pepper}, the spicy berries of the {Xanthoxylum
      piperitum}, a species of prickly ash found in China and
      Japan.

   {Guinea pepper}. See under {Guinea}, and {Capsicum}.

   {Jamaica pepper}. See {Allspice}.

   {Long pepper}.
      (a) The spike of berries of {Piper longum}, an East Indian
          shrub.
      (b) The root of {Piper, or Macropiper, methysticum}. See
          {Kava}.

   {Malaguetta}, or {Meleguetta}, {pepper}, the aromatic seeds
      of the {Amomum Melegueta}, an African plant of the Ginger
      family. They are sometimes used to flavor beer, etc.,
      under the name of {grains of Paradise}.

   {Red pepper}. See {Capsicum}.

   {Sweet pepper bush} (Bot.), an American shrub ({Clethra
      alnifolia}), with racemes of fragrant white flowers; --
      called also {white alder}.

   {Pepper box} or {caster}, a small box or bottle, with a
      perforated lid, used for sprinkling ground pepper on food,
      etc.

   {Pepper corn}. See in the Vocabulary.

   {Pepper elder} (Bot.), a West Indian name of several plants
      of the Pepper family, species of {Piper} and {Peperomia}.
      

   {Pepper moth} (Zo["o]l.), a European moth ({Biston
      betularia}) having white wings covered with small black
      specks.

   {Pepper pot}, a mucilaginous soup or stew of vegetables and
      cassareep, much esteemed in the West Indies.

   {Pepper root}. (Bot.). See {Coralwort}.

   {pepper sauce}, a condiment for the table, made of small red
      peppers steeped in vinegar.

   {Pepper tree} (Bot.), an aromatic tree ({Drimys axillaris})
      of the Magnolia family, common in New Zealand. See
      {Peruvian mastic tree}, under {Mastic}.

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.

   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.

            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.

   {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} (Zo["o]l.), an African
      gallinaceous bird, of the genus {Numida}, allied to the
      pheasants. The common domesticated species ({N.
      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 ({N. 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
      [AE]thiopicum}. 

   {Guinea pig}. [Prob. a mistake for Guiana pig.]
      (a) (Zo["o]l.) A small Brazilian rodent ({Cavia cobaya}),
          about seven inches in length and usually of a white
          color, with spots of orange and black.

Source : WordNet®

Guinea pepper
     n 1: West African plant bearing pungent peppery seeds [syn: {grains
          of paradise}, {Guinea grains}, {melagueta pepper}, {Aframomum
          melegueta}]
     2: tropical west African evergreen tree bearing pungent
        aromatic seeds used as a condiment and in folk medicine
        [syn: {negro pepper}, {Xylopia aethiopica}]