The Collaborative International Dictionary of English v.0.48:

Cordon bleu \Cordon bleu\ (k?r`d?n" bl?") [F., blue cordon],
   1. a first-rate cook, or one worthy to be the cook of the
      cordons bleus, or Knights of the Holy Ghost, a
      distinguished order of French knights, famous for their
      good dinners.
      [1913 Webster]

   2. the blue ribbon worn by the Knights of the Holy Ghost.
      [PJC]

   3. [one entitled to wear the cordon bleu[2].] a person of
      high distinction.
      [PJC]

   5. (Cookery) a dish prepared with thin slices of meat
      separated by layers of ham and cheese, and then sauteed;
      as, chicken cordon bleu is a popular dish.
      [PJC]

WordNet (r) 3.0 (2006):

cordon bleu
    n 1: a chef famous for his great skill
    2: an honor or award gained for excellence [syn: blue ribbon,
       cordon bleu]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "cordon bleu":
   Admirable Crichton, adept, artisan, artist, attache, authority,
   blue ribbon, connaisseur, connoisseur, consultant, cordon,
   crack shot, craftsman, dead shot, decoration, decoration of honor,
   diplomat, diplomatist, elder statesman, experienced hand, expert,
   expert consultant, garter, gold star, graduate, grand cordon,
   handy man, journeyman, marksman, no slouch, order, ornament,
   politician, pro, professional, professor, proficient, red ribbon,
   riband, ribbon, savant, shark, sharp, star, statesman,
   technical adviser, technician