to officially say that sth is not allowed, often by law 禁止；取缔；查禁◆They decided to ban company-wide emails. 他们决定在全公司范围内禁止使用电子邮件。◆The government has banned the import of all meat and dairy products for health reasons. 由於健康原因， 政府已下令禁止进口所有肉类和奶类制品。
(usually be banned) to officially say that sb is not allowed to do sth or go somewhere 禁止某人做某事（或去某处）◆She was banned from holding public office. 她被禁止担任公职。