Definitions

from The Century Dictionary.

  • noun In machinery, a main wheel that communicates motion to another or to others.
  • noun In railroading, one of the large wheels (commonly four, though occasionally as many as ten, in number) in a locomotive engine which are fixed upon the crank-axles or main shafts. Also called driver and drive-wheel.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun On a steam locomotive, a powered wheel driven by the locomotive's pistons or turbine.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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

Etymologies

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Examples

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