actionkey
nounUK /ˈæk.ʃən kiː/
US /ˈæk.ʃən kiː/
A button you press to make something happen.
Press the action key to start the game.
OTHER MEANINGS
2. A key on a keyboard or controller that performs a specific command.
The action key on the controller makes the character jump.
3. A shortcut that quickly runs a task in a computer program.
She set an action key to save her work instantly.
4. A special button in a game that makes the player do something.
Tap the action key to open the treasure chest.