switchmachine
nounUK /ˈswɪtʃməˌʃiːn/
US /ˈswɪtʃməˌʃin/
A machine that flips a switch to turn something on or off.
The switchmachine clicked and the lights came on.
OTHER MEANINGS
2. A device that changes railway tracks from one line to another.
The switchmachine moved the rails so the train could change tracks.
3. A tool used to swap or exchange items quickly.
The factory uses a switchmachine to swap parts on the assembly line.
4. A person who operates switches in a telephone exchange.
The switchmachine connected the call to the right line.