(1)(虽未正式废除，但已)失效的法律；形同虚设的规定；停止使用的作法；具文

(2)死信
因发信人和收信人地址均不明而无法投递或者退回，由邮局死信科销毁的信。

• compulsa
• compulsion
• compulsive behavior
• compulsory
• compulsory acquisition
• compulsory appearance
• compulsory arbitration
• compulsory assignment
• compulsory attendance
• compulsory attendance law
• compulsory condition
• compulsory counterclaim
• compulsory disclosure
• compulsory education
• compulsory insurance
• compulsory integration
• compulsory joinder
• compulsory jurisdiction
• compulsory labor
• compulsory liability insurance
• compulsory license
• compulsory liquidation
• compulsory measure short of war
• compulsory military training
• compulsory nonsuit