simple past tense and past participle of ban
"The local council banned smoking in all public parks last week, and anyone who tries to light a cigarette will be fined immediately."
In plain English: To ban something means to officially stop people from doing it or having access to it because of rules or laws.
"The school banned students from bringing cellphones to class."
forbidden by law
"The government banned the sale of fireworks in the city center due to safety concerns."
Forbidden; not allowed.
"The school banned all electronic devices from the library to ensure a quiet environment."