Source : Webster's Revised Unabridged Dictionary (1913)

Reality \Re*al"i*ty\, n.; pl. {Realities}. [Cf. F.
   r['e]alit['e], LL. realitas. See 3d {Real}. and cf. 2d
   {Realty}.]
   1. The state or quality of being real; actual being or
      existence of anything, in distinction from mere
      appearance; fact.

            A man fancies that he understands a critic, when in
            reality he does not comprehend his meaning.
                                                  --Addison.

   2. That which is real; an actual existence; that which is not
      imagination, fiction, or pretense; that which has
      objective existence, and is not merely an idea.

            And to realities yield all her shows. --Milton.

            My neck may be an idea to you, but it is reality to
            me.                                   --Beattie.

   3. [See 1st {Realty}, 2.] Loyalty; devotion. [Obs.]

            To express our reality to the emperor. --Fuller.

   4. (Law) See 2d {Realty}, 2.

Source : WordNet®

reality
     n 1: all of your experiences that determine how things appear to
          you; "his world was shattered"; "we live in different
          worlds"; "for them demons were as much a part of reality
          as trees were" [syn: {world}]
     2: the state of being actual or real; "the reality of his
        situation slowly dawned on him" [syn: {realness}, {realism}]
        [ant: {unreality}]
     3: the state of the world as it really is rather than as you
        might want it to be; "businessmen have to face harsh
        realities"
     4: the quality possessed by something that is real [ant: {unreality}]