derailleur

noun de·rail·leur \ di-ˈrā-lər \

Definition of derailleur

:a mechanism for shifting gears on a bicycle that operates by moving the chain from one set of exposed gears to another

Recent Examples of derailleur from the Web

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Origin and Etymology of derailleur

French dérailleur, from dérailler


DERAILLEUR Defined for English Language Learners

derailleur

noun

Definition of derailleur for English Language Learners

  • : a part on a bicycle that is used to change gears by moving the chain from one gear to another one


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