（体操运动中的）吊环
two round handles at the ends of two long ropes that hang from the ceiling and are used in gymnastics
Sadly, he injured his left shoulder badly while performing on the rings.
The image is of a gymnast on the rings.
He's an all-rounder, competing on the pommel horse, the bars, and the rings.
His next move on the rings was the cross.
It must take phenomenal upper-body strength to master the rings.
See also: ring noun (CIRCLE)