Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “belt up”

belt up

UK informal phrasal verb with belt     /belt/ verb informal
used to tell someone to stop talking or making a noise: Just belt up, would you? I'm trying to concentrate.Interrupting and preventing from speakingInterjectionsSounds used as interjections
(Definition of belt up from the Cambridge Learner's Dictionary © Cambridge University Press)

Translations of “belt up”

Word of the Day

handout

a document given to students or reporters which contains information about a particular subject

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More