Meaning of OSS, THE in English

OSS, the /ˌəʊ es ˈes/ BrE AmE abbreviation for

the Office of Strategic Services; a former US government department established in 1942 to collect information about other countries, especially secretly. It was replaced by the ↑ CIA in 1947.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.