butt plug

noun2

1. •
   A sex toy designed for insertion into the anus and rectum.

   • Sex toys, butt plugs, lube inside / Hundreds of Trojans, you're so fucking broken / How'd I get caught up in your double life? — 2025
2. •
   (rare) A rubber cap fitted to the end of the pole in pole vaulting; the pole tip.

   • Remove the butt plug of the pole and have the athlete grip 8–12 inches (about 20–30.5 cm) in excess of his or her extended reach on a pole placed vertically. — 2000