I go on your finger, I summon you to answer, I surround a boxing match, and a circus performs in me. What am I?

Question

Accepted Answer

A Ring. A ring is jewellery for the finger. A phone rings to summon you. A boxing ring is the square arena. And a circus ring is the circular performance area. Four meanings, one word.

"I go on your finger, I summon you to answer, I surround a boxing match, and a circus performs in me. What am I?"

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