What is the meaning of the word "ban"?

Definitions:

to banish from a place of residence, as for punishment verb
- We banned them because of their behavior.
to expel from a community or group verb
- The sect banned them for not following the rules.
to forbid the public distribution of media verb
- The government is temporarily banning books with inappropriate themes.
to prohibit especially by legal means or social pressure verb
- This referendum will ban smoking inside all government buildings.