the.com/wedding ring

means A circular band, usually metal, worn on the finger to signify that one is married.

from The ring itself traces to ancient Egypt, where a circle — no beginning, no end — was already a symbol of eternity, worn on reeds and later metal. The Romans are credited with placing it on the fourth finger of the left hand, believing a 'vena amoris,' or vein of love, ran straight from there to the heart — a sweet idea, though anatomically false. The word 'wedding' itself comes from Old English 'wedd,' meaning a pledge or vow — so a wedding ring is, quite literally, a pledge-ring, the promise made solid enough to wear.