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' indicates a hidden word.
'DIN' is hidden in the letters of '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" .)