1 N-COUNT (商业协议中的)第三方，第三者;(法律案件中的)第三当事人 A third party is someone who is not one of the main people involved in a business agreement or legal case, but who is involved in it in a minor role. (商业协议中的)第三方，第三者;(法律案件中的)第三当事人

2 ADJ (保险)第三方责任的 Third-party insurance is a type of insurance that pays money to people who are hurt or whose property is damaged as a result of something you have done. It does not pay you any money for damage you suffer as a result of your own actions. (保险)第三方责任的 [British]