Definition of the Peace Corps noun from the Oxford Advanced Learner's Dictionary

 

the Peace Corps

 noun
noun
BrE
 
; NAmE
 
[singular]
 
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a US organization that sends young Americans to work in other countries without pay in order to create international friendship Culture President John F Kennedy began the Peace Corps in 1961 with the aim of helping other countries in the fields of health, education, farming, etc. and so developing international friendship.
See the Oxford Advanced American Dictionary entry: the Peace Corps