The Collaborative International Dictionary of English v.0.48:

Salesman \Sales"man\ (s[=a]lz"man), n.; pl. Salesmen (-men).
   [Sale + man.]
   One who sells anything; one whose occupation is to sell goods
   or merchandise.
   [1913 Webster]

WordNet (r) 3.0 (2006):

salesman
    n 1: a man salesperson