a government-subsidized shop operated mainly for military personnel
Abbreviation: PX
Post Exchange in American English
US
a nonprofit general store at an army post or camp, for the sale of services, merchandise, and refreshments
post exchange in American English
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
Word origin
[1890–95]This word is first recorded in the period 1890–95. Other words that entered Englishat around the same time include: blanket roll, honky-tonk, masochism, takedown, wireless