Hindrance to sleep
I believe the answer is:
noise
(Other definitions for noise that I've seen before include "Din, cacophony" , "Sound, disagreeable perhaps" , "Unpleasant sounds" , "Hum" , "Fuss" .)
I believe the answer is:
noise
(Other definitions for noise that I've seen before include "Din, cacophony" , "Sound, disagreeable perhaps" , "Unpleasant sounds" , "Hum" , "Fuss" .)