資料來源 : Webster's Revised Unabridged Dictionary (1913)

Driving \Driv"ing\, a.
   1. Having great force of impulse; as, a driving wind or
      storm.

   2. Communicating force; impelling; as, a driving shaft.

   {Driving axle}, the axle of a driving wheel, as in a
      locomotive.

   {Driving box} (Locomotive), the journal box of a driving
      axle. See Illust. of {Locomotive}.

   {Driving note} (Mus.), a syncopated note; a tone begun on a
      weak part of a measure and held through the next accented
      part, thus anticipating the accent and driving it through.
      

   {Driving spring}, a spring fixed upon the box of the driving
      axle of a locomotive engine to support the weight and
      deaden shocks. [Eng.] --Weale.

   {Driving wheel} (Mach.), a wheel that communicates motion;
      one of the large wheels of a locomotive to which the
      connecting rods of the engine are attached; -- called
      also, simply, driver. See Illust. of {Locomotive}.

資料來源 : WordNet®

driving wheel
     n : a wheel that drives a motor vehicle (transforms torque into
         a tractive force)