flywheel

[ flahy-hweel, -weel ]
/ ˈflaɪˌʰwil, -ˌwil /

noun Machinery.

a heavy disk or wheel rotating on a shaft so that its momentum gives almost uniform rotational speed to the shaft and to all connected machinery.

Origin of flywheel

First recorded in 1775–85; fly1 + wheel

Example sentences from the Web for flywheel

British Dictionary definitions for flywheel

flywheel
/ (ˈflaɪˌwiːl) /

noun

a heavy wheel that stores kinetic energy and smooths the operation of a reciprocating engine by maintaining a constant speed of rotation over the whole cycle