# flywheel

> English word · Noun · frequency rank #38,841

## Definitions
1. A rotating mass used to maintain the speed of a machine within certain limits while the machine receives or releases energy at a varying rate, or as a form of energy storage.

## Etymology
From fly + wheel.

## Common misspellings (13)
`fflywheel`, `fllywheel`, `flwyheel`, `flyhweel`, `flywehel`, `flywheell`, `flywhel`, `flywhele`, `flywhheel`, `flywwheel`, `flyywheel`, `fylwheel`, `lfywheel`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/flywheel