Racket in Edinburgh (3)
I believe the answer is:
din
'racket' is the definition.
(both can mean a loud noise or disturbance)
'in edinburgh' is the wordplay.
'in' indicates the answer is hidden within the clue.
'DIN' can be found hidden inside 'edinburgh'.
(Other definitions for din that I've seen before include "Clamour" , "Loud and long noise" , "Distracting noise" , "Loud harsh hoise" , "Row, noise" .)