Derailleur Definition

dĭ-rālər
derailleurs
noun
A mechanism for shifting gears on a bicycle, that moves the chain from one to another of the different-sized sprocket wheels.
Webster's New World
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Other Word Forms of Derailleur

Noun

Singular:
derailleur
Plural:
derailleurs

Origin of Derailleur

  • French dérailleur from dérailler to derail derail

    From American Heritage Dictionary of the English Language, 5th Edition

  • From French dérailleur.

    From Wiktionary

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