What is the meaning of Tuner?

A person who tunes a piano or organ.

A device, electronic or mechanical, that helps a person tune a musical instrument by showing the deviation of the played pitch from the desired pitch.

On a musical instrument, a peg or mechanical device that changes the tension, and hence pitch, of a string.

The component of an audio system that receives radio broadcasts.

One who sings or makes music.

A musical.

tuner TV, radio

to tune a vehicle etc

tuner

tuner

Source: wiktionary.org