tuning up

listen to the pronunciation of tuning up
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Definition of tuning up in English English dictionary

tune up
To make adjustments to an engine in order to improve its performance
tune up
To make preparations for vigorous exercise; to warm up
tune up
adjust for (better) functioning; "tune the engine"
tune up
of musical instruments; "My piano needs to be tuned"
tune up
adjustment of the motor (of a car, etc.) in order to make sure that the engine is running properly
tune up
When a group of musicians tune up, they adjust their instruments so that they produce the right notes. I could hear the sound of a band tuning up. see also tune 4