finalswitch
nounUK /ˈfaɪnəl swɪtʃ/
US /ˈfaɪnəl swɪtʃ/
The last button you press to make something happen.
Press the finalswitch to turn on the machine.
OTHER MEANINGS
2. The very last change you make to something.
The finalswitch to the plan made everyone happy.
3. A switch that ends a game or race.
The referee used the finalswitch to stop the clock.
4. The last turn or move in a game.
Her finalswitch won the board game.