A circumscribing object, (roughly) circular and hollow, looking like an annual ring, earring, finger ring etc.physical
A round piece of (precious) metal worn around the finger or through the ear, nose, etc.physical
A bird band, a round piece of metal put around a bird's leg used for identification and studies of migration.UK, physical
A burner on a kitchen stove, hob, or cooktop.UK, physical
A piece of food in the shape of a ring.physical
In a jack plug, the connector between the tip and the sleeve.physical
The rectum, anus, or anal sphincters.physical, vulgar
An instrument, formerly used for taking the sun's altitude, consisting of a brass ring suspended by a swivel, with a hole at one side through which a solar ray entering indicated the altitude on the graduated inner surface opposite.historical, physical
A flexible band partly or wholly encircling the spore cases of ferns.physical
A group of objects arranged in a circle.
A circular group of people or objects.physical
A formation of various pieces of material orbiting around a planet or young star.physical
A large circular prehistoric stone construction such as Stonehenge.UK, physical
A long stripe of contrastive material, colour, etc, that encircles something.
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.
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.
The open space in front of a racecourse stand, used for betting purposes.
An exclusive group of people, usually involving some unethical or illegal practices.
A group of atoms linked by bonds to form a closed chain in a molecule.
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.historical
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.
A network topology where connected devices form a circular data channel. All computers on the ring can see every message, and there are no collisions, and a single point of failure will occur if any part of the ring breaks.
The resonant sound of a bell, or a sound resembling it.
A pleasant or correct sound.figuratively
A sound or appearance that is characteristic of something.figuratively
A telephone call.colloquial
Any loud sound; the sound of numerous voices; a sound continued, repeated, or reverberated.
A chime, or set of bells harmonically tuned.
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.
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.
A family of sets that is closed under finite unions and set-theoretic differences.
A family of sets closed under finite union and finite intersection.