From Wiktionary, the free dictionary
From auto- + plunger.
autoplunger (plural autoplungers)
- (pinball) An automatic plunger, one that propels the ball onto the table without being operated mechanically by the player.
1999, Ryan Avery, “TZ questions”, in rec.games.pinball (Usenet):Does a ball ever enter the autoplunger lane, and if so, is it ever served?
