Lofty lad's furniture (7)
I believe the answer is:
tallboy
'furniture' is the definition.
(tallboy is a kind of furniture)
'lofty lad's' is the wordplay.
'lofty' becomes 'tall' (synonyms).
'lad' becomes 'boy' (I've seen this in another clue).
'tall'+'boy'='TALLBOY'
(Other definitions for tallboy that I've seen before include "Chests of drawers, one on top of the other" , "Piece of furniture made by lofty youth" , "Chest of drawers for lofty lad" , "High chest of drawers" , "Big chest of drawers" .)