Reportedly express disapproval of furniture material in shop (8)
I believe the answer is:
boutique
'shop' is the definition.
(boutique is a kind of shop)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for boutique that I've seen before include "Small shop selling fashion clothes" , "Trendy shop" , "Fashionable clothes store" , "Small dress shop" , "shop offered" .)