oil ring

noun

Definition of oil ring 

1 : a seal engravers' finger ring having a small receptacle containing a mixture of oil and diamond dust used in replenishing the engraving tool

3 : a piston ring designed to secure proper distribution of lubricating oil over the length of cylinder wall traversed by the piston

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Learn More about oil ring

Dictionary Entries near oil ring

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oil red

oil rig

oil ring

oil rock

oil sand

oil seal

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