piston ring

1. 1.

   seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall

   Broaderseal

   Part ofpiston

Questions about piston ring

What does piston ring mean?

piston ring means "seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall".

Is piston ring a common word?

piston ring is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.