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English definition of “belt up”

belt up

(BE QUIET) UK, very informal phrasal verb with belt     /belt/ verb
used to tell someone to stop talking or making a noise : Just belt up, will you! I'm trying to concentrate .Interrupting and preventing from speaking
(Definition of belt up (BE QUIET) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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Translations of “belt up”

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