An official rule that specifies that people are not allowed to do or to use something: The street workers have lifted the ban on driving on Mark's street now that the sewer pipes have been installed.

The mayor of the town recently announced a smoking ban in all public buildings.

To prohibit or to forbid people from using or doing something: The star football player was banned from the team because he was using illegal drugs.

The school has banned students from using cell phones in all classes.

The city council is banning smoking in restaurants.