圆环 Traditional form: 圓環 Pinyin (reading): yuánhuán Definitions: ring (any circular object) (math.) annulus (Tw) traffic circle; rotary Characters: 圆 - circle; circular, round; complete 环 - bracelet, ring; to surround, to loop Traditional characters: 圓 - circle; circular, round; complete 環 - bracelet, ring; to surround, to loop