button
noun [ C ]
uk/ˈbʌtən/ us COMMUNICATIONS, IT
a small, often circular object which you press to operate a device or a machine, or an area on a computer screen which looks and works like one of these:
press/hit/push a button Press the green button to start the machine and the red button to stop it.
the send/save/delete button Always re-read your email messages carefully before you hit the send button.
MARKETING
→ button ad