This is the 7097th most frequent Russian word.
блокирование
Blocking or obstruction.
It is used as a noun derived from the verb 'блокировать', meaning 'the act of blocking'.
Блокирование дороги привело к пробке.
The blocking of the road caused a traffic jam.
Here it describes the action of restraining or denying access through a technical mechanism.
Блокирование пользователя в чате предотвратило дальнейшие оскорбления.
Blocking the user in the chat prevented further insults.
It is applied in the context of digital content control, referencing stopping unwanted advertisements.