finalkey
nounUK /ˈfaɪnəl kiː/
US /ˈfaɪnəl kiː/
The last key you use to finish something.
She turned the finalkey and the door opened.
OTHER MEANINGS
2. The last important piece that makes everything work.
Trust was the finalkey to their friendship.
3. The button you press to complete a task on a device.
Press the finalkey to send your message.
4. The winning move in a game.
He played the finalkey and won the match.