A solid object in the shape of a circle. • A circumscribing object, (roughly) circular and hollow, looking like an annual ring, earring, finger ring etc. • A round piece of (precious) metal worn around the finger or through the ear, nose, etc. • A bird band, a round piece of metal put around a bird's leg used for identification and studies of migration. • A burner on a kitchen stove, hob, or cooktop. • A piece of food in the shape of a ring. • In a jack plug, the connector between the tip and the sleeve. • The rectum, anus, or anal sphincters. • 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. • A flexible band partly or wholly encircling the spore cases of ferns. • A group of objects arranged in a circle. • A circular group of people or objects. • A formation of various pieces of material orbiting around a planet or young star. • A large circular prehistoric stone construction such as Stonehenge. • A long stripe of contrastive material, colour, etc, that encircles something. • Ellipsis of webring. • 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. • 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.