Source : Webster's Revised Unabridged Dictionary (1913)

Season \Sea"son\, v. t. [imp. & p. p. {Seasoned}; p. pr. & vb.
   n. {Seasoning}.]
   1. To render suitable or appropriate; to prepare; to fit.

            He is fit and seasoned for his passage. --Shak.

   2. To fit for any use by time or habit; to habituate; to
      accustom; to inure; to ripen; to mature; as, to season one
      to a climate.

   3. Hence, to prepare by drying or hardening, or removal of
      natural juices; as, to season timber.

   4. To fit for taste; to render palatable; to give zest or
      relish to; to spice; as, to season food.

   5. Hence, to fit for enjoyment; to render agrecable.

            You season still with sports your serious hours.
                                                  --Dryden.

            The proper use of wit is to season conversation.
                                                  --Tillotson.

   6. To qualify by admixture; to moderate; to temper. ``When
      mercy seasons justice.'' --Shak.

   7. To imbue; to tinge or taint. ``Who by his tutor being
      seasoned with the love of the truth.'' --Fuller.

            Season their younger years with prudent and pious
            principles.                           --Jer. Taylor.

   8. To copulate with; to impregnate. [R.] --Holland.

Seasoning \Sea"son*ing\, n.
   1. The act or process by which anything is seasoned.

   2. That which is added to any species of food, to give it a
      higher relish, as salt, spices, etc.; a condiment.

   3. Hence, something added to enhance enjoyment or relieve
      dullness; as, wit is the seasoning of conversation.

            Political speculations are of so dry and austere a
            nature, that they will not go down with the public
            without frequent seasonings.          --Addison.

   {Seasoning tub} (Bakery), a trough in which dough is set to
      rise. --Knight.

Source : WordNet®

seasoning
     n 1: something added to food primarily for the savor it imparts
          [syn: {flavorer}, {flavourer}, {flavoring}, {flavouring},
           {seasoner}]
     2: the act of adding a seasoning to food