Definition of piston ring Piston ring
pis•ton ring
We found 3 definitions of piston ring from 3 different sources.
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What does piston ring mean?
WordNet
Noun |
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| piston ring - seal consisting of a split metal ring that seals the gap between a piston and the cylinder wall | ||
| seal any of numerous marine mammals that come on shore to breed; chiefly of cold regions | ||
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Wiktionary 
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piston ring
A ring or seal that fits around a piston, sealing between the piston and the bore in which it slides.
