American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "postal service" in a sentence
"But for keeping up with on-the-roaders, standard postal service leaves something to be desired."
"A well regulated routine of tribute and taxation, personally inspected by the Caliph; a network of waterways, canaux d’arrosage; a noble system of highways, provided with viaducts, bridges and caravanserais, and a postal service of mounted couriers enabled it to collect as in a reservoir the wealth of the outer world."