The Collaborative International Dictionary of English v.0.48:

Warehouseman \Ware"house`man\, n.; pl. Warehousemen.
   1. One who keeps a warehouse; the owner or keeper of a dock
      warehouse or wharf store.
      [1913 Webster]

   2. One who keeps a wholesale shop or store for Manchester or
      woolen goods. [Eng.]
      [1913 Webster]

   Warehouseman's itch (Med.), a form of eczema occurring on
      the back of the hands of warehousemen.
      [1913 Webster]

WordNet (r) 3.0 (2006):

warehouseman
    n 1: a workman who manages or works in a warehouse [syn:
         warehouser, warehouseman]