Addiction treatment cuts out a clock's sound it's said (5)
I believe the answer is:
detox
'addiction treatment' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for detox that I've seen before include "Rid of poison" , "Treatment for alcoholism" , "What thalassotherapy may bring" , "Remove poisons from the body" , "possible treatment of alcoholic" .)