Derailleur gears operates the lever while pedalling, the change in cable tension moves the chain-guide from side to side, "derailing" the chain onto different sprockets. For more information about the choice of particular gear ratios and sprocket sizes, see Bicycle gearing. "Derailleur" is a French word, spelled "dérailleur" in French, derived from the derailment of a train from its tracks. Its first recorded use was 1930. At least one notable bicycle industry author has attempted to promote the anglicized spelling of "derailer". As of 2013, however, neither Merriam-Webster nor the Oxford English Dictionary has an entry for "derailer". Various derailleur systems were
Football (word) brother plays football in the States", it would be clear from context that American football is meant. Canadian French usage parallels English usage, with "le football" usually referring to Canadian or American football, and "le soccer" referring to association football. When there is ambiguity, "le football canadien" or "le football américain" is used. Rugby union football in Canada is almost always referred to simply as "rugby". In most of the English-speaking Caribbean, "football" and "soccer" are both used to refer to association football, but use of the word "football" is far more common. The exception is the Bahamas, where the