Source : Webster's Revised Unabridged Dictionary (1913)

Dispatcher \Dis*patch"er\, n.
   One who dispatches.

Source : WordNet®

dispatcher
     n 1: the official who signals the beginning of a race or
          competition [syn: {starter}]
     2: employee of a transportation company who controls the
        departures of vehicles according to weather conditions and
        in the interest of efficient service