- a gasket or seal in the form of a ring with a circular cross section, typically made of rubber and used especially in swivelling joints.
noun: O-ring, plural noun: O-rings
- a singing game played by children, in which the players hold hands and dance in a circle, ...
- IPA[ˈō ˌriNG]
- a gasket in the form of a ring with a circular cross section, typically made of pliable ...
Oxford American Dictionary