Area for the display of merchandise (8)
I believe the answer is:
showroom
'area for the display of merchandise' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for showroom that I've seen before include "Where e.g. cars on display" , "sales area" , "Area for the display of merchandise" , "Semi-transparent" , "Where eg cars for sale are displayed" .)