Loud noise (4)
'loud noise' is the definition.
(din can mean a loud disturbance)
This is the entire clue.
(Other definitions for din that I've seen before include "Roar of confused noises" , "Noisy disturbance" , "'Loud, harsh noise (3)'" , "Loud annoying noise" , "Unwanted noise" .)
'loud noise' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for report that I've seen before include "Explosion" , "Announce; rumour" , "Formal statement" , "Bulletin" , "'Description, account (6)'" .)
'loud noise' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for bang that I've seen before include "A loud report or a collision" , "Sound of explosion" , "Strike violently" , "hit" , "Sudden loud noise like an explosion" .)
'loud noise' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for boom that I've seen before include "Time of great prosperity - hear the sound" , "It may protect harbour" , "Noise of large explosion" , "Dull explosion; prosperous period" , "Spar - loud noise" .)