What do a.m. and p.m. stand for?

post exchange

noun, U.S. Army.
a retail store on an army installation that sells goods and services to military personnel and their dependents and to certain authorized civilian personnel.
Abbreviation: PX.
Origin of post exchange
1890-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for post exchange
  • He had seen ordnance officers and quartermaster officers and post exchange officers and other spooky military anomalies.
  • Belts are normally available for purchase at the post exchange, at your expense.
  • The post exchange system was established, which offered soldiers beer and general dry goods at a fair price.
  • Enlisted marines were issued two free cans of beer per day from the post exchange, an event which also broke the monotony.
British Dictionary definitions for post exchange

post exchange

(US) a government-subsidized shop operated mainly for military personnel PX
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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