
thumb|Shimano 600 front derailleur (1980)
thumb|Shimano 600 front derailleur (1980)
A derailleur ( ; ) is specifically a device that moves a bicycle chain from one sprocket to another, and more generally the entire gearset on a multiple-speed bicycle with such a mechanism.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).