MI6


Meaning of MI6 in English

MI6 /ˌem aɪ ˈsɪks/ BrE AmE noun

a secret British government organization that sends people to foreign countries to try and find out secret political and military information:

He used to work for MI6.

the head of MI6

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