Meaning of -GATE in English

-GATE

-gate /ɡeɪt/ AmE suffix

used after the name of a place, person, or thing to give a name to an event involving dishonest behaviour by a politician or other public official:

Irangate (=when members of the US government sold weapons to Iran in exchange for the return of American hostages)

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