noun
eject button; load button
A button on a device (e.g., CD/DVD drive, printer, vending machine) used to eject media or retrieve an item. The exact function depends on the device.
CDを取り出すには、取り出しボタンを押してください。
To eject the CD, press the eject button.
I pressed the load/eject button on the printer and removed the paper.