vb, bans, banning or banned. 1. (tr) to prohibit, esp officially, from action, display, entrance, sale, etc; forbid: to ban a book; to ban smoking. 2. (Law) (tr) (formerly in South Africa) to place (a person suspected of illegal political activity) under a government order restricting his movement and his contact with other people.
In contemporary English, ban is synonymous with boycotting, prohibiting, and censoring. It is a way of keeping something from people (or people from something), usually because it’s viewed as dangerous or harmful to the public.
Word Origin. Old English bannan 'summon by a public proclamation', of Germanic origin, reinforced by Old Norse banna 'curse, prohibit'; the noun is partly from Old French ban 'proclamation, summons, banishment'. See ban in the Oxford Advanced American Dictionary See ban in the Oxford Learner's Dictionary of Academic English.