driving : Idioms & Phrases

• noun the axle of a self-propelled vehicle that provides the driving power
  live axle.
  

WordNet

• the axle of a driving wheel, as in a locomotive.

Webster 1913

• (Locomotive), the journal box of a driving axle. See Illust. of Locomotive.

Webster 1913

• (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.

Webster 1913

• a spring fixed upon the box of the driving axle of a locomotive engine to support the weight and deaden shocks. Eng. Weale.

Webster 1913

• noun a wheel that drives a motor vehicle (transforms torque into a tractive force)
  

WordNet

• (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.

Webster 1913