Meaning of “ring” - Learner’s Dictionary

ring

noun [ C ] uk us /rɪŋ/
JEWELLERY

A2 a round piece of jewellery that you wear on your finger:

a wedding ring
a gold ring
CIRCLE

B2 something that is the shape of a circle:

The children sat in a ring around the teacher.
SOUND

the sound a bell makes:

The ring of the doorbell woke him up.
a crime/drug/spy, etc ring

a group of people who are involved in an illegal activity together

a boxing/circus ring

an area with seats around it where boxers (= people fighting) or people in a circus (= show) perform

give sb a ring mainly UK

A2 to telephone someone:

If you want anything, just give me a ring.
→ See also key ring

(Definition of “ring noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)