Peace Corps

Từ điển Oxford Advanced Learner 8th

the ˈPeace Corps 7 [Peace Corps] BrE NAmE noun singular
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.