Derailleur meaning

dĭ-rālər
Frequency:
A device for shifting gears on a bicycle by moving the chain between sprocket wheels of different sizes.
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A mechanism for shifting gears on a bicycle, that moves the chain from one to another of the different-sized sprocket wheels.
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The mechanism on a bicycle used to move the chain from one sprocket (gear) to another.
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The entire gearset on a bicycle with such a mechanism.
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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