Scarf that will reduce the noise? (7)
I believe the answer is:
muffler
'scarf' is the definition.
(I know that muffler is a type of scarf)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for muffler that I've seen before include "Warming garment" , "Thick scarf - silencer (US)" , "Sound deadener" , "Wrap or scarf worn round the neck" , "Kind of scarf" .)