Eject holes are simply holes that are found on the playfields of some games. A ball may fall into one of these shallow holes. After registering a score the ball is the kicked out or ejected from the hole.

The eject hole kicker mechanism is very similar to the slingshot kicker.

The physics: A ball falls into the hole and pushes down on a switch which completes a circuit to a scoring relay. Other devices controlled by the relay eventually close a switch which will activate the coil on the eject hole kicker solenoid. The energized coil magnetizes the iron core which is pulled in and attracted to the coil stop at the bottom of the coil. The L-shaped kicker arm is rotated about its axis (levers, torque) which produces a strong force on the pinball, ejecting it from the hole. The force of the kicker on the ball fires the ball out of the hole as a projectile The solenoid is deactivated by a reopening of the switch (controlled by another device) that energized it after the ball ejection. The spring force returns iron core to its original position.