splashboard \splash"board`\, n.
   a guard in the front part of vehicle, to prevent splashing by
   a mud or water from the horse's heels; -- in the united
   states commonly called dashboard.
   1913 webster

dashboard \dash"board`\ da^sh"b=ord`, n.
   1. a board placed on the fore part of a carriage, sleigh, or
      other vehicle, to intercept water, mud, or snow, thrown up
      by the heels of the horses; -- in england commonly called
      splashboard.
      1913 webster

   2. naut.
      a the float of a paddle wheel.
      b a screen at the bow af a steam launch to keep off the
          spray; -- called also sprayboard.
          1913 webster

   3. an instrument panel beneath the front window of a motor
      vehicle such as an automobile or truck, containing
      indicating gauges and dials, such as the speedometer and
      fuel gauges, and sometimes certain control knobs or other
      devices.
      pjc
see also:
splashboard sprayboard 

splashboard
     n 1: protective covering consisting of a broad plank along a
          gunwale to keep water from splashing over the side syn:
           washboard
     2: protective covering consisting of a panel to protect people
        from the splashing water or mud etc. syn: splasher, dashboard
see also:
washboard splasher dashboard