1. (slang) sphincter
2. (normal) a rubberygasket used to seal a connection between two pipes. The o-ring is squished between two flanges, forming an air-tight seal.
Synonyms for o-ring
On this page, you will find 30 slang terms related to o-ring. Some of the top words include: starfish, Baloon Knot, sinbad, shit box, poo chute, and 25 more.