Bat clamour (6)
I believe the answer is:
racket
This clue is a double definition.
'bat' is the first definition.
(I've seen this before)
'clamour' is the second definition.
(I've seen this before)
(Other definitions for racket that I've seen before include "Fraudulent scheme" , "Dodgy business" , "Lot of noise or bat for game (6)" , "Sports implement" , "Din - strung bat" .)