The police busted the drug ring.

She wore a beautiful arm ring on her upper arm.

The scientist studied the annual rings of the tree to determine its age.

I always keep my keys on a key ring.

The benzene ring is a common structural feature in organic compounds.

He performed amazing tricks on the flying rings.

The piston ring helps to seal the combustion chamber and prevent oil from leaking into the cylinder.

I attached my keys to a split ring.

I need to buy a new ring binder for my documents.