- 1tune something to adjust a musical instrument so that it plays at the correct pitch to tune a guitar
- 2tune something to adjust an engine so that it runs smoothly and as well as possible
- 3 [usually passive] tune something (in) (to something) to adjust the controls on a radio or television so that you can receive a particular program or channel The radio was tuned (in) to a classical music station. (informal) Stay tuned for the news coming up next.
- 4tune something (to something) to prepare or adjust something so that it is suitable for a particular situation His speech was tuned to what the audience wanted to hear. Phrasal Verbstune in (to something)tune in to somebody/somethingtune outtune up
NAmE//tun//Verb Forms present simple I / you / we / they tune
he / she / it tunes
past simple tuned
-ing form tuning