switcher

noun
UK /ˈswɪtʃ.ər/
US /ˈswɪtʃ.ɚ/

A switcher is a thing or person that changes something from one to another.

The little switcher on the lamp lets you turn it on and off.


OTHER MEANINGS

2. A device that connects or changes electrical circuits or signals.

The technician used a switcher to send the video to a different screen.

3. A person who changes their opinion, loyalty, or habits often.

He is a switcher who tries a new hobby every month.

4. A railway worker or machine that moves trains between tracks.

The switcher moved the cars onto the side track.