shutdowncode
nounUK /ˈʃʌt.daʊn kəʊd/
US /ˈʃʌt.daʊn koʊd/
A special set of letters or numbers that tells a machine to stop working.
The engineer typed the shutdowncode to turn off the big computer safely.
OTHER MEANINGS
2. A secret code used to close a program or game.
He entered the shutdowncode to end the game.
3. A signal that makes a robot or device go to sleep.
The toy robot heard the shutdowncode and went quiet.
4. A code word a group uses to end a meeting or activity.
The teacher gave the shutdowncode, and everyone packed up.