also: おしぼたん
noun
push button; push-button
A button that is pressed to operate something, such as a doorbell, elevator, or machine control.
エレベーターの押しボタンを押してください。
Please press the elevator's push button.
この機械は押しボタン一つで動きます。
This machine operates with a single push of a button.
Compound of 押し (pushing, from verb 押す 'to push') and ボタン (button, from English 'button').