A finger ring with a short inscription, once popular as lovers' tokens in England.

(algebra, ring theory) A ring which is either: (a) a commutative ring in which every ideal is finitely generated, or (b) a noncommutative ring that is both left-Noetherian (every left ideal is finitely generated) and right-Noetherian (every right ideal is finitely generated).

plural of ring leader

(algebra, ring theory) A ring whose multiplicative operation is commutative.

A form of body art wherein a piercing is placed in a cauterized puncture of the umbilicus.

A closed loop of lasers with two beams of light travelling in opposite directions.

plural of ring system

Alternative form of wedding ring

A method of spinning fibres to make a yarn. The roving is first attenuated by using drawing rollers, then spun and wound around a rotating spindle contained within an independently rotating ring flyer.

(historical) A ring worn to prevent cramp, epilepsy and associated diseases, especially one specifically blessed by an English monarch before the Reformation.