buff up

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English[edit]

Verb[edit]

buff up

  1. (transitive, idiomatic) to improve
  2. (transitive) to shine; to make shiny
  3. (intransitive, idiomatic) to become more muscular
  4. (intransitive, idiomatic) to study hard to learn a particular subject
    I'll need to buff up on my Italian before my trip to Genoa.