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BNC: 0 COCA: 16558

derailleur

noun
/dɪˈreɪljə(r)/
/dɪˈreɪlər/
(specialist)
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  1. a type of gear on a bicycle that works by lifting the chain from one gearwheel to another larger or smaller one拨链器,变速器(自行车换挡装置)
    Word Origin1930s: from French, from dérailler ‘derail’.
BNC: 0 COCA: 16558
BNC: 0 COCA: 16558
BNC: 0 COCA: 16558

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