Source : Webster's Revised Unabridged Dictionary (1913)

Smile \Smile\ (sm[imac]l), v. i. [imp. & p. p. {Smiled}
   (sm[imac]ld); p. pr. & vb. n. {Smiling}.] [OE. smilen; akin
   to Dan. smile, Sw. smila, MHG. smielen, smieren, L. mirari to
   wonder at, Skr. smi to smile; and probably to E. smicker.
   [root]173. Cf. {Admire}, {Marvel}, {Smirk}.]
   1. To express amusement, pleasure, moderate joy, or love and
      kindness, by the features of the face; to laugh silently.

            He doth nothing but frown. . . . He hears merry
            tales and smiles not.                 --Shak.

            She smiled to see the doughty hero slain. --Pope.

            When last I saw thy young blue eyes, they smiled.
                                                  --Byron.

   2. To express slight contempt by a look implying sarcasm or
      pity; to sneer.

            'T was what I said to Craggs and Child, Who praised
            my modesty, and smiled.               --Pope.

   3. To look gay and joyous; to have an appearance suited to
      excite joy; as, smiling spring; smiling plenty.

            The desert smiled, And paradise was opened in the
            wild.                                 --Pope.

   4. To be propitious or favorable; to favor; to countenance;
      -- often with on; as, to smile on one's labors.

Source : WordNet®

smiling
     adj : smiling with happiness or optimism; "Come to my arms, my
           beamish boy!"- Lewis Carroll; "a room of smiling
           faces"; "a round red twinkly Santa Claus" [syn: {beamish},
            {smiling(a)}, {twinkly}]

smiling
     n : a facial expression characterized by turning up the corners
         of the mouth; usually shows pleasure or amusement [syn: {smile},
          {grin}, {grinning}]