BELT UP


Meaning of BELT UP in English

( BrE )

1.

( NAmE ˌbuckle ˈup ) ( informal ) to fasten your seat belt (= a belt worn by a passenger in a vehicle)

2.

( informal ) used to tell sb rudely to be quiet

SYN shut up :

Just belt up, will you!

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.