The Collaborative International Dictionary of English v.0.48:

Tradesman \Trades"man\, n.; pl. Tradesmen.
   1. One who trades; a shopkeeper.
      [1913 Webster]

   2. A mechanic or artificer; esp., one whose livelihood
      depends upon the labor of his hands. [U. S.] --Burrill.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tradesman
    n 1: a merchant who owns or manages a shop [syn: shopkeeper,
         tradesman, storekeeper, market keeper]