Webster's Revised Unabridged Dictionary · 1913

Courier

Courier (k??"r?-?r) , noun

[French courrier, from courre, courir, to run, Latin currere. See Course, Current.]

1.
A messenger sent with haste to convey letters or dispatches, usually on public business.
The wary Bassa... by speedy couriers, advertised Solyman of the enemy's purpose. — Knolles
2.
An attendant on travelers, whose business it is to make arrangements for their convenience at hotels and on the way.