The Collaborative International Dictionary
Postrider
Postrider \Post"rid`er\, n.
One who rides over a post road to carry the mails.
--Bancroft.
Wiktionary
postrider
n. One who rides over a postroad to carry the mails.
Usage examples of "postrider".
A few minutes later the postrider galloped past, a thin youth on a sturdy spotted pony.
If she sends those messages by postriders, they will not be far behind us.
Hence the long and tedious business of packing, of ordering the great traveling coach and a smaller vehicle for the servants and extra luggage, and of sending postriders ahead with orders to prepare Larkmoor, the small royal manor near Kymil.