Ring1  —n. 1 circular band, usu. Of metal, worn on a finger. 2 circular band of any material. 3 rim of a cylindrical or circular object, or a line or band round it. 4 mark etc. Resembling a ring (rings round his eyes; smoke rings). 5 ring in the cross-section of a tree, produced by one year's growth. 6 a enclosure for a circus performance, boxing, betting at races, showing of cattle, etc. B (prec. By the) bookmakers collectively. 7 a people or things in a circle.