Definition of "tune"
A song, or short musical composition.
The act of tuning or maintenance.
The state or condition of being correctly tuned.
A very good song.
To modify a musical instrument so that it produces the correct pitches.
To adjust a mechanical, electric or electronic device (such as a radio or a car engine) so that it functions optimally.
To make more precise, intense, or effective.
To cheek; to be impudent towards.