Definitions

1. noun

a button that is operated by being pushed, especially one used to control an electrical device or machine

“She pressed the pushbutton on the elevator to go to her floor.”

2. verb

to operate a button or switch, especially a pushbutton

“Someone pushed the button to turn on the lights.”

3. verb

to use forceful pressure to move or press something

“She pushed the button on the calculator to get the result.”