Postilion
Pronunciation : Pos*til"ion
Part of Speech : n.
Etymology : [F. postillon, It. postiglione, fr. posta post. See Post a postman.]
Definition : Defn: One who rides and guides the first pair of horses of a coach or post chaise; also, one who rides one of the horses when one pair only is used. [Written also postillion.]
Source : Webster's Unabridged Dictionary, 1913