Like Loki perhaps, I covered up right racket (5)
I believe the answer is:
noise
'racket' is the definition.
(racket can mean a loud noise)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for noise that I've seen before include "Clamour" , "Din, cacophony" , "Static - sound" , "Loud or disturbing sound" , "Commotion" .)