tune up

Short definition from Wiktionary

Verb

1. 1
   To make adjustments (to an engine or bicycle drivetrain) in order to improve its performance.
2. 2
   To make preparations for vigorous exercise; to warm up.
3. 3
   To begin to sing or play music.
4. 4
   To tune one's instrument in preparation for performance.
5. 5
   To beat up (someone).

Noun

1. 1
   A series of adjustments to an engine in order to improve its performance
2. 2
   A series of preparations for vigorous exercise; a warm-up
3. 3
   A match or race (frequently one exhibition in nature) contested as preparation for a match or race of high stakes.