The Collaborative International Dictionary of English v.0.48:

Gratification \Grat"i*fi*ca"tion\, n. [L. gratificatio: cf. F.
   gratification.]
   1. The act of gratifying, or pleasing, either the mind, the
      taste, or the appetite; as, the gratification of the
      palate, of the appetites, of the senses, of the desires,
      of the heart.
      [1913 Webster]

   2. That which affords pleasure; satisfaction; enjoyment;
      fruition: delight.
      [1913 Webster]

   3. A reward; a recompense; a gratuity. --Bp. Morton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

gratification
    n 1: state of being gratified or satisfied; "dull repetitious
         work gives no gratification"; "to my immense gratification
         he arrived on time" [syn: gratification, satisfaction]
    2: the act or an instance of satisfying