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English definition of “tune-up”

tune-up

noun [C usually singular] uk   /ˈtjuːn.ʌp/ us    /ˈtuːn-/ (UK also tune)
the act of making small changes to an engine so that it works as well as possible: The engine needs a tune-up, and can you give the car a good service as well?Mechanical engineeringCorrecting and mendingEditing and compiling
(Definition of tune-up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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