Sentence:  The man was of the old school and held a very poor opinion, so her papa said, of the new flashman types—men like Gunnet, who despite his coarse features was one of Mr Cameron's most elegant <WSD>dragsmen</WSD>. 
Meaning of the word marked with <WSD> tags:  A driver of a carriage, coach, or drag, for public transport, private hire, or as a household servant; coachman.