United States Postal Service: Meaning and Definition of

Unit'ed States' Post'al Serv"ice

Pronunciation: [key]
  1. an independent federal agency created in 1971 by the Postal Reorganization Act to replace the Post Office Department as the division of the federal government responsible for postal services. Abbr.: USPS
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.