A person employed to drive an automobile, a chauffeur; an archaic or British variant spelling of chauffeur.
From French 'chauffeur' (heater, fireman), originally the person who maintained steam-powered vehicles' boilers. The spelling 'choffer' is an older English approximation of the French pronunciation.
When cars first replaced carriages, the job title 'chauffeur' confused English speakers so much that dozens of variant spellings appeared—'choffer,' 'chafer,' and 'shafer'—until standardization finally won out.
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