[1] : The Collaborative International Dictionary of English v.0.48

pea \pea\, n.; pl. peas p=ez or pease p=ez. oe.
   pese, fr. as. pisa, or of. peis, f. pois; both fr. l. pisum;
   cf. gr. pi`sos, pi`son. the final s was misunderstood in
   english as a plural ending. cf. pease.
   1. bot. a plant, and its fruit, of the genus pisum, of
      many varieties, much cultivated for food. it has a
      papilionaceous flower, and the pericarp is a legume,
      popularly called a pod.
      1913 webster

   note: when a definite number, more than one, is spoken of,
         the plural form peas is used; as, the pod contained
         nine peas; but, in a collective sense, the form pease
         is preferred; as, a bushel of pease; they had pease at
         dinner. this distinction is not always preserved, the
         form peas being used in both senses.
         1913 webster

   2. a name given, especially in the southern states, to the
      seed of several leguminous plants species of dolichos,
      cicer, abrus, etc. esp. those having a scar hilum
      of a different color from the rest of the seed.
      1913 webster

   note: the name pea is given to many leguminous plants more or
         less closely related to the common pea. see the
         phrases, below.
         1913 webster

   beach pea bot., a seashore plant, lathyrus maritimus.
      

   black-eyed pea, a west indian name for dolichos
      sphaerospermus and its seed.

   butterfly pea, the american plant clitoria mariana,
      having showy blossoms.

   chick pea. see chick-pea.

   egyptian pea. same as chick-pea.

   everlasting pea. see under everlasting.

   glory pea. see under glory, n.

   hoary pea, any plant of the genus tephrosia; goat's rue.
      

   issue pea, orris pea. med. see under issue, and
      orris.

   milk pea. bot. see under milk.

   pea berry, a kind of a coffee bean or grain which grows
      single, and is round or pea-shaped; often used
      adjectively; as, pea-berry coffee.

   pea bug. zool. same as pea weevil.

   pea coal, a size of coal smaller than nut coal.

   pea crab zool., any small crab of the genus
      pinnotheres, living as a commensal in bivalves; esp.,
      the european species pinnotheres pisum which lives in
      the common mussel and the cockle.

   pea dove zool., the american ground dove.

   pea-flower tribe bot., a suborder papilionaceae of
      leguminous plants having blossoms essentially like that of
      the pea. --g. bentham.

   pea maggot zool., the larva of a european moth tortrix
      pisi, which is very destructive to peas.

   pea ore min., argillaceous oxide of iron, occurring in
      round grains of a size of a pea; pisolitic ore.

   pea starch, the starch or flour of the common pea, which is
      sometimes used in adulterating wheat flour, pepper, etc.
      

   pea tree bot., the name of several leguminous shrubs of
      the genus caragana, natives of siberia and china.

   pea vine. bot.
      a any plant which bears peas.
      b a kind of vetch or tare, common in the united states
          lathyrus americana, and other similar species.

   pea weevil zool., a small weevil bruchus pisi which
      destroys peas by eating out the interior.

   pigeon pea. bot. see pigeon pea.

   sweet pea bot., the annual plant lathyrus odoratus;
      also, its many-colored, sweet-scented blossoms.
      1913 webster
see also:
peas pease pisum dolichos cicer abrus 
beach pea lathyrus maritimus black-eyed pea dolichos sphaerospermus butterfly pea 
clitoria mariana chick pea chick-pea egyptian pea everlasting pea 
everlasting glory pea glory hoary pea tephrosia 
issue pea orris pea issue orris milk pea 
milk pea berry pea bug pea weevil pea coal 
pea crab pinnotheres pinnotheres pisum pea dove pea-flower tribe 
papilionaceae pea maggot tortrix pisi pea ore pea starch 
pea tree caragana pea vine lathyrus americana bruchus pisi 
pigeon pea sweet pea lathyrus odoratus 

[2] : The Collaborative International Dictionary of English v.0.48

sweet \sweet\, a. compar. sweeter; superl. sweetest. oe.
   swete, swote, sote, as. sw=ete; akin to ofries. sw=ete,
   os. sw=oti, d. zoet, g. s"uss, ohg. suozi, icel. saetr,
   soetr, sw. s"ot, dan. s"od, goth. suts, l. suavis, for
   suadvis, gr. ?, skr. sv=adu sweet, svad, sv=ad, to
   sweeten. root175. cf. assuage, suave, suasion.
   1. having an agreeable taste or flavor such as that of sugar;
      saccharine; -- opposed to sour and bitter; as, a sweet
      beverage; sweet fruits; sweet oranges.
      1913 webster

   2. pleasing to the smell; fragrant; redolent; balmy; as, a
      sweet rose; sweet odor; sweet incense.
      1913 webster

            the breath of these flowers is sweet to me.
                                                  --longfellow.
      1913 webster

   3. pleasing to the ear; soft; melodious; harmonious; as, the
      sweet notes of a flute or an organ; sweet music; a sweet
      voice; a sweet singer.
      1913 webster

            to make his english sweet upon his tongue.
                                                  --chaucer.
      1913 webster

            a voice sweet, tremulous, but powerful. --hawthorne.
      1913 webster

   4. pleasing to the eye; beautiful; mild and attractive; fair;
      as, a sweet face; a sweet color or complexion.
      1913 webster

            sweet interchange
            of hill and valley, rivers, woods, and plains.
                                                  --milton.
      1913 webster

   5. fresh; not salt or brackish; as, sweet water. --bacon.
      1913 webster

   6. not changed from a sound or wholesome state. specifically:
      a not sour; as, sweet milk or bread.
      b not state; not putrescent or putrid; not rancid; as,
          sweet butter; sweet meat or fish.
          1913 webster

   7. plaesing to the mind; mild; gentle; calm; amiable;
      winning; presuasive; as, sweet manners.
      1913 webster

            canst thou bind the sweet influence of pleiades?
                                                  --job xxxviii.
                                                  31.
      1913 webster

            mildness and sweet reasonableness is the one
            established rule of christian working. --m. arnold.
      1913 webster

   note: sweet is often used in the formation of self-explaining
         compounds; as, sweet-blossomed, sweet-featured,
         sweet-smelling, sweet-tempered, sweet-toned, etc.
         1913 webster

   sweet alyssum. bot. see alyssum.

   sweet apple. bot.
      a any apple of sweet flavor.
      b see sweet-sop.

   sweet bay. bot.
      a the laurel laurus nobilis.
      b swamp sassafras.

   sweet calabash bot., a plant of the genus passiflora
      passiflora maliformis growing in the west indies, and
      producing a roundish, edible fruit, the size of an apple.
      

   sweet cicely. bot.
      a either of the north american plants of the
          umbelliferous genus osmorrhiza having aromatic roots
          and seeds, and white flowers. --gray.
      b a plant of the genus myrrhis myrrhis odorata
          growing in england.

   sweet calamus, or sweet cane. bot. same as sweet
      flag, below.

   sweet cistus bot., an evergreen shrub cistus ladanum
      from which the gum ladanum is obtained.

   sweet clover. bot. see melilot.

   sweet coltsfoot bot., a kind of butterbur petasites
      sagittata found in western north america.

   sweet corn bot., a variety of the maize of a sweet taste.
      see the note under corn.

   sweet fern bot., a small north american shrub comptonia
      asplenifolia syn. myrica asplenifolia having
      sweet-scented or aromatic leaves resembling fern leaves.
      

   sweet flag bot., an endogenous plant acorus calamus
      having long flaglike leaves and a rootstock of a pungent
      aromatic taste. it is found in wet places in europe and
      america. see calamus, 2.

   sweet gale bot., a shrub myrica gale having bitter
      fragrant leaves; -- also called sweet willow, and dutch
      myrtle. see 5th gale.

   sweet grass bot., holy, or seneca, grass.

   sweet gum bot., an american tree liquidambar
      styraciflua. see liquidambar.

   sweet herbs, fragrant herbs cultivated for culinary
      purposes.

   sweet john bot., a variety of the sweet william.

   sweet leaf bot., horse sugar. see under horse.

   sweet marjoram. bot. see marjoram.

   sweet marten zool., the pine marten.

   sweet maudlin bot., a composite plant achillea
      ageratum allied to milfoil.

   sweet oil, olive oil.

   sweet pea. bot. see under pea.

   sweet potato. bot. see under potato.

   sweet rush bot., sweet flag.

   sweet spirits of niter med. chem. see spirit of nitrous
      ether, under spirit.

   sweet sultan bot., an annual composite plant centaurea
      moschata, also, the yellow-flowered centaurea
      odorata; -- called also sultan flower.

   sweet tooth, an especial fondness for sweet things or for
      sweetmeats. colloq.

   sweet william.
      a bot. a species of pink dianthus barbatus of many
          varieties.
      b zool. the willow warbler.
      c zool. the european goldfinch; -- called also sweet
          billy. prov. eng.

   sweet willow bot., sweet gale.

   sweet wine. see dry wine, under dry.

   to be sweet on, to have a particular fondness for, or
      special interest in, as a young man for a young woman.
      colloq. --thackeray.
      1913 webster

   syn: sugary; saccharine; dulcet; luscious.
        1913 webster
see also:
sweeter sweetest assuage suave suasion sweet alyssum 
alyssum sweet apple sweet-sop sweet bay laurus nobilis 
sweet calabash passiflora passiflora maliformis sweet cicely osmorrhiza 
myrrhis myrrhis odorata sweet calamus sweet cane sweet flag 
sweet cistus cistus ladanum sweet clover melilot sweet coltsfoot 
petasites sagittata sweet corn corn sweet fern comptonia asplenifolia 
myrica asplenifolia sweet flag acorus calamus calamus sweet gale 
myrica gale sweet willow dutch myrtle gale sweet grass 
sweet gum liquidambar styraciflua liquidambar sweet herbs sweet john 
sweet leaf horse sweet marjoram marjoram sweet marten 
sweet maudlin achillea ageratum sweet oil sweet pea pea 
sweet potato potato sweet rush sweet spirits of niter spirit of nitrous ether 
spirit sweet sultan centaurea moschata centaurea odorata sultan flower 
sweet tooth sweet william dianthus barbatus sweet billy sweet willow 
sweet wine dry wine dry to be sweet on 

[3] : WordNet (r) 2.0

sweet pea
     n : climbing garden plant having fragrant pastel-colored flowers
         syn: sweetpea, lathyrus odoratus
see also:
sweetpea lathyrus odoratus 

Chick Pea >> C Words
Chick Pea, definition of term: Chick Pea
chick+pea_pag1.html

Black-Eyed Pea >> B Words
Black-Eyed Pea, definition of term: Black-Eyed Pea
black-eyed+pea_pag1.html

Beach Pea >> B Words
Beach Pea, definition of term: Beach Pea
beach+pea_pag1.html