(algebra) A ring with 0 ≠ 1, such that every non-zero element a has a multiplicative inverse, meaning an element x with ax = xa = 1.

(chemistry) An item of laboratory equipment consisting of a metal pole with a solid, firm base, used to hold or clamp laboratory glassware and other equipment in place, so that it does not fall down or come apart.

a ring or tube made of rubber, in particular a circular air-filled tube used as an aid to swimming

(Roman Catholicism) A ring worn by popes, representing the first pope and Christian apostle Peter, who had been a fisherman.

A ring of smoke exhaled by a smoker.

A ring (for one's finger) that shows what school one attended and one's year of graduation.

The trust-inspiring sound, tenor, or impression of being truthful.

The layer of wood, observed as one of many concentric rings when cut, formed during one year of a plant's growth

A biological species consisting of overlapping subgroups, each of which can interbreed with the next, but which cannot freely interbreed when taken as a whole

A ring-shaped piece of onion formed from a way of cutting through the natural shell structure of the onion. / A food composed of onions cut into rings, that are then battered and deep-fried.