Sentence:  Then there was the music of the rattling harness, and the ring of the horses' feet on the hard road, and the glare of the two bright lamps through the steaming hoar frost, over the leaders' ears, into the darkness; and the cheery toot of the guard's horn, to warn some drowsy <WSD>pikeman</WSD> or the ostler at the next change ; and the looking forward to daylight — and last but not least, the delight of returning sensation in your toes. 
Meaning of the word marked with <WSD> tags:  A person who operates a turnpike.