road fund licence

Từ điển Oxford Advanced Learner 8th

ˈroad fund licence 7 [road fund licence road fund licences] BrE NAmE (also ˈtax disc) noun
(in Britain) a small circle of paper that is put on the window of a vehicle or on a motorcycle to show that the owner has paid the tax that allows them to use the vehicle on public roads
See also: ↑tax disc