Long upholstered seats (5)
I believe the answer is:
sofas
'long upholstered seats' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for sofas that I've seen before include "Long upholstered seats" , "Lounges" , "Couches" , "Furniture" , "Upholstered seats for more than one" .)