Source : Webster's Revised Unabridged Dictionary (1913)

Diplomacy \Di*plo"ma*cy\, n. [F. diplomatie. This word, like
   supremacy, retains the accent of its original. See
   {Diploma}.]
   1. The art and practice of conducting negotiations between
      nations (particularly in securing treaties), including the
      methods and forms usually employed.

   2. Dexterity or skill in securing advantages; tact.

   3. The body of ministers or envoys resident at a court; the
      diplomatic body. [R.] --Burke.

Source : WordNet®

diplomacy
     n 1: negotiation between nations [syn: {diplomatic negotiations}]
     2: subtly skillful handling of a situation [syn: {delicacy}, {discreetness},
         {finesse}]
     3: wisdom in the management of public affairs [syn: {statesmanship},
         {statecraft}]