backbutton
nounUK /ˈbækˌbʌtən/
US /ˈbækˌbʌtən/
A button you press to go back to the page you were on before.
Tap the back button to return to the home screen.
RELATED WORDS
OTHER MEANINGS
2. A physical button on a device that takes you to the previous screen or menu.
Press the back button on your phone to close the app.
3. A browser control that loads the last page you visited.
I hit the back button because the link was broken.
4. A key on some remote controls that returns to the prior channel or menu.
Use the back button on the remote to exit the settings.