green card
noun [ C ] uk/ˌɡriːn ˈkɑːd/ us/ˌɡriːn ˈkɑːrd/
(WORK)
（美国）绿卡
a document giving someone who is not a US citizen permission to live and work in the US
(CAR)
UK（在国外开车需要的）绿色保险证，汽车国外事故保险证
a document that insures your car against accidents (= protects you financially if you have a car accident) when travelling in other countries