(noun)
broadly, a circular form or structure, such as an object used for connecting or hanging things, a circular pattern, or a circular arrangement of people or things;
e.g. There is a crack in a ring that is holding up the window curtains. The cat had a ring of white fur around each eye. The children formed a ring around their teacher.
(noun)
a space, usually enclosed and often circular in shape, in which a performance or competition takes place, especially a place for a circus act or a wrestling/boxing match;
e.g. The two boxers left the ring for a break halfway through the match.
(noun)
the clear, vibrating sound made by a bell or some other metallic object, or broadly, a loud and clear sound;
e.g. We heard the ring of the church bells and knew that it was eight o'clock. He could hear the ring of her voice easily from across the room.
(noun)
the action or instance of causing a bell or some other metallic object to make a clear, vibrating sound;
e.g. He gave the bel such a hard ring that he dented the metal.
(verb)
to surround something/someone, especially to form a circle around it/them, often in order to protect or contain it/them;
e.g. The police started to ring the building so that the robbers would not escape.
(verb)
to make a loud, clear, vibrating sound, similar to that made by a bell or some other metallic object, or to cause something to make such a sound;
e.g. The students waited for the bell to ring because they were bored by the class.