buttonpurpose
nounUK /ˈbʌtən ˈpɜːpəs/
US /ˈbʌtən ˈpɜːrpəs/
A buttonpurpose is the job a button does when you press it.
The buttonpurpose of the red button is to start the machine.
OTHER MEANINGS
2. The reason a button was made or placed somewhere.
The designer explained the buttonpurpose before building the panel.
3. The planned result of pressing a button in a game or app.
Each buttonpurpose in the game is listed in the help menu.
4. A label or note that tells what a button will do.
He read the buttonpurpose on the screen before tapping it.