The Collaborative International Dictionary of English v.0.48:

Statesman \States"man\ (-man), n.; pl. Statesmen (-men).
   1. A man versed in public affairs and in the principles and
      art of government; especially, one eminent for political
      abilities.
      [1913 Webster]

            The minds of some of our statesmen, like the pupil
            of the human eye, contract themselves the more, the
            stronger light there is shed upon them. --Moore.
      [1913 Webster]

   2. One occupied with the affairs of government, and
      influential in shaping its policy.
      [1913 Webster]

   3. A small landholder. [Prov. Eng.] --Halliwell.
      [1913 Webster]

WordNet (r) 3.0 (2006):

statesman
    n 1: a man who is a respected leader in national or
         international affairs [syn: statesman, solon, national
         leader]

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "statesman":
   Admirable Crichton, adept, artisan, artist, attache, authority,
   connaisseur, connoisseur, consultant, cordon bleu, crack shot,
   craftsman, dead shot, diplomat, diplomatist, elder statesman,
   experienced hand, expert, expert consultant, graduate, handy man,
   journeyman, marksman, national leader, no slouch, politician, pro,
   professional, professor, proficient, public man, savant, shark,
   sharp, solon, stateswoman, technical adviser, technician