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tune (sth) up

(ENGINE) phrasal verb with tune
 
/tjuːn/
 
US  /tuːn/ verb [T]

Definition

to tune an engineMechanical engineeringCorrecting and mendingEditing and compiling
(Definition of tune (sth) up (ENGINE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of tune (sth) up