Source : Webster's Revised Unabridged Dictionary (1913)

Egg \Egg\, n. [OE., fr. Icel. egg; akin to AS. [ae]g (whence OE.
   ey), Sw. ["a]gg, Dan. [ae]g, G. & D. ei, and prob. to OSlav.
   aje, jaje, L. ovum, Gr. 'w,o`n, Ir. ugh, Gael. ubh, and perh.
   to L. avis bird. Cf. {Oval}.]
   1. (Popularly) The oval or roundish body laid by domestic
      poultry and other birds, tortoises, etc. It consists of a
      yolk, usually surrounded by the ``white'' or albumen, and
      inclosed in a shell or strong membrane.

   2. (Biol.) A simple cell, from the development of which the
      young of animals are formed; ovum; germ cell.

   3. Anything resembling an egg in form.

   Note: Egg is used adjectively, or as the first part of
         self-explaining compounds; as, egg beater or
         egg-beater, egg case, egg ladle, egg-shaped, etc.

   {Egg and anchor} (Arch.), an egg-shaped ornament, alternating
      with another in the form of a dart, used to enrich the
      ovolo; -- called also {egg and dart}, and {egg and
      tongue}. See {Anchor}, n., 5. --Ogilvie.

   {Egg cleavage} (Biol.), a process of cleavage or
      segmentation, by which the egg undergoes endogenous
      division with formation of a mass of nearly similar cells,
      from the growth and differentiation of which the new
      organism is ultimately formed. See {Segmentation of the
      ovum}, under {Segmentation}.

   {Egg development} (Biol.), the process of the development of
      an egg, by which the embryo is formed.

   {Egg mite} (Zo["o]l.), any mite which devours the eggs of
      insects, as {Nothrus ovivorus}, which destroys those of
      the canker worm.

   {Egg parasite} (Zo["o]l.), any small hymenopterous insect,
      which, in the larval stage, lives within the eggs of other
      insects. Many genera and species are known.

Egg \Egg\, v. t. [imp. & p. p. {Egged}; p. pr. & vb. n.
   {Egging}.] [OE. eggen, Icel. eggja, fr. egg edge. ??. See
   {Edge}.]
   To urge on; to instigate; to incite?

         Adam and Eve he egged to ill.            --Piers
                                                  Plowman.

         [She] did egg him on to tell How fair she was.
                                                  --Warner.

Source : WordNet®

egg
     n 1: animal reproductive body consisting of an ovum or embryo
          together with nutritive and protective envelopes;
          especially the thin-shelled reproductive body laid by
          e.g. female birds
     2: oval reproductive body of a fowl (especially a hen) used as
        food [syn: {eggs}]
     3: one of the two male reproductive glands that produce
        spermatozoa and secrete androgens; "she kicked him in the
        balls and got away" [syn: {testis}, {testicle}, {orchis},
        {ball}, {ballock}, {bollock}, {nut}]

egg
     v 1: throw eggs at
     2: coat with beaten egg; "egg a schnitzel"