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flywheel

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noun fly·wheel \-ˌhwēl, -ˌwēl\

Simple Definition of flywheel

  • : a heavy wheel that is part of a machine and that controls the speed of machinery

Full Definition of flywheel

  1. :  a heavy wheel for opposing and moderating by its inertia any fluctuation of speed in the machinery with which it revolves; also :  a similar wheel used for storing kinetic energy (as for motive power)



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