number plate

/N AH1 M B ER0 P L EY0 T/
noun
  1. 1

    Either of a pair of rectangular metal plates bearing an alphanumeric code, fixed to the front and rear of a motor car to show its identity as registered with the DVLA.

Translate “number plate” into another language

Source: https://en.wiktionary.org/wiki/number%20plate