TUNE UP


Meaning of TUNE UP in English

tune up phrasal verb ( see also ↑ tune )

1 . when musicians tune up, they prepare their instruments to play at the right ↑ pitch

tune something ↔ up

The band were tuning up their guitars.

2 . tune something ↔ up to make small changes to an engine so that it works as well as possible

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.