derailleur

Fetched 2026-10-26 (cache).

Synonyms: tirailleur, railleur, derailleurs, derailer

Antonyms: tirailleur, railleur, derailleurs, derailer

Related words from Datamuse; suggestions, not definitions.

Noun

1. A [[mechanism]] on a [[bicycle#Noun|bicycle]] [[wheel#Noun|wheel]] [[use#Verb|used]] while [[cycle#Verb|cycling]] to [[move#Verb|move]] the [[bicycle chain]] from one [[sprocket]] ([[gear#Noun|gear]]) to another, to [[change#Verb|change]] [[speed#Noun|speeds]]. {{defdate|from early 20th c.}}
2. The [[entire#Adjective|entire]] [[gearset]] on a bicycle with such a mechanism.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.