Gymnastics apparatus (5)
(Other definitions for rings that I've seen before include "Identifies bird" , "Marks that are made round" , "See 12" , "Encircles" , "that may circle planet (not ours)" .)
(Other definitions for parallel bars that I've seen before include "Gymnastic event and apparatus" , "Gymnastic discipline" , "Facility at gym club" , "Gymnast's supports" , "may enable people to drink separately?" .)