license number

Từ điển Oxford Advanced Learner 8th

ˈlicense number [license number] BrE NAmE (NAmE) (BrE regiˈstration number, regis·tra·tion) noun
the series of letters and numbers that are shown on a ↑license plate at the front and back of a vehicle to identify it
See also: ↑registration ▪ ↑registration number