ring

(physical) A solid object in the shape of a circle.

(physical) A group of objects arranged in a circle.

A piece of food in the shape of a ring.

“onion rings”

A place where some sports or exhibitions take place; notably a circular or comparable arena, such as a boxing ring or a circus ring; hence the field of a political contest.

An exclusive group of people, usually involving some unethical or illegal practices.

“a crime ring; a prostitution ring; a bidding ring (at an auction sale)”

A group of atoms linked by bonds to form a closed chain in a molecule.

“a benzene ring”

A planar geometrical figure included between two concentric circles.

A diacritical mark in the shape of a hollow circle placed above or under the letter; a kroužek.

An old English measure of corn equal to the coomb or half a quarter.

A hierarchical level of privilege in a computer system, usually at hardware level, used to protect data and functionality (also protection ring).

Either of the pair of clamps used to hold a telescopic sight to a rifle.

The twenty-fifth Lenormand card.

To enclose or surround.

“The inner city was ringed with dingy industrial areas.”

To make an incision around; to girdle.

“They ringed the trees to make the clearing easier next year.”

To attach a ring to, especially for identification.

“We managed to ring 22 birds this morning.”

To surround or fit with a ring, or as if with a ring.

“to ring a pig’s snout”

To rise in the air spirally.

To steal and change the identity of (cars) in order to resell them.

The resonant sound of a bell, or a sound resembling it.

“The church bell's ring could be heard the length of the valley.”

A pleasant or correct sound.

“The name has a nice ring to it.”

A sound or appearance that is characteristic of something.

“Her statements in court had a ring of falsehood.”

A telephone call.

“I’ll give you a ring when the plane lands.”

Any loud sound; the sound of numerous voices; a sound continued, repeated, or reverberated.

A chime, or set of bells harmonically tuned.

“St Mary's has a ring of eight bells.”

Of a bell, etc., to produce a resonant sound.

“The bells were ringing in the town.”

To make (a bell, etc.) produce a resonant sound.

“The deliveryman rang the doorbell to drop off a parcel.”

To produce (a sound) by ringing.

“They rang a Christmas carol on their handbells.”

To produce the sound of a bell or a similar sound.

“Whose mobile phone is ringing?”

Of something spoken or written, to appear to be, to seem, to sound.

“That does not ring true.”

To telephone (someone).

“I will ring you when we arrive.”

To resound, reverberate, echo.

To produce music with bells.

To repeat often, loudly, or earnestly.

An algebraic structure which consists of a set with two binary operations: an additive operation and a multiplicative operation, such that the set is an abelian group under the additive operation, a monoid under the multiplicative operation, and such that the multiplicative operation is distributive with respect to the additive operation.

“The set of integers, \mathbb{Z}, is the prototypical ring.”

An algebraic structure as above, but only required to be a semigroup under the multiplicative operation, that is, there need not be a multiplicative identity element.

“The definition of ring without unity allows, for instance, the set 2\mathbb{Z} of even integers to be a ring.”