Inside, holding racket (3)
I believe the answer is:
din
'racket' is the definition.
(both can mean a loud noise or disturbance)
'inside holding' is the wordplay.
'inside' says the answer is hidden in the clue.
'DIN' can be found hidden inside 'holding'.
(Other definitions for din that I've seen before include "'Continuous, unpleasant noise (3)'" , "Distracting noise" , "Roar of confused noises" , "Loud harsh hoise" , "commotion" .)