Belt up

verb, slang

Definitions

Verb
  1. 1
    To fasten one's seat belt. British, intransitive
  2. 2
    refuse to talk or stop talking; fall silent wordnet
  3. 3
    To stop talking or chattering; to shut up. British, colloquial, derogatory, imperative, intransitive, regional
  4. 4
    To beat up (someone). slang, transitive

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