[1] : The Collaborative International Dictionary of English v.0.48

postman \post"man\, n.; pl. postmen.
   1. a post or courier; a letter carrier.
      1913 webster

   2. eng. law one of the two most experienced barristers in
      the court of exchequer, who have precedence in motions; --
      so called from the place where he sits. the other of the
      two is called the tubman. --whishaw.
      1913 webster
see also:
postmen 

[2] : WordNet (r) 2.0

postman
     n : a man who delivers the mail syn: mailman, mail carrier,
          letter carrier, carrier
see also:
mailman mail carrier letter carrier carrier 

[3] : Bouvier's Law Dictionary, Revised 6th Ed (1856)

postman, eng. law. a barrister in the court of exchequer, who has precedence 
in: motions. 

Postman >> P Words
Postman, definition of term: Postman
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