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

Moby Thesaurus II by Grady Ward, 1.0:

68 Moby Thesaurus words for "gratification":
   amusement, animal pleasure, bodily pleasure, boodle, bribe,
   bribe money, carnal delight, coddling, comfort, compensation,
   content, contentment, cosseting, coziness, creature comforts,
   delight, ease, endpleasure, enjoyment, entertainment, euphoria,
   favoring, forepleasure, fruition, fun, gratuity,
   great satisfaction, gusto, hearty enjoyment, humoring, hush money,
   indulgence, intellectual pleasure, joie de vivre, keen pleasure,
   kicks, luxury, mollycoddling, obliging, overindulgence,
   overpermissiveness, pampering, payoff, payola, permissiveness,
   physical pleasure, pleasing, pleasure, protection, quiet pleasure,
   recompense, relish, requital, return, reward, satisfaction,
   self-gratification, self-indulgence, sensual pleasure,
   sensuous pleasure, sexual pleasure, sop, spoiling,
   sweetness of life, titillation, voluptuousness, well-being, zest