Item of furniture fixed, though top is scratched (5)
I believe the answer is:
table
'item of furniture' is the definition.
(I've seen this before)
'fixed though top is scratched' is the wordplay.
'fixed' becomes 'stable' (both can mean solid).
'though top is scratched' means to remove the first letter (top letter in down clue is deleted).
'stable' with its first letter taken away is 'TABLE'.
(Other definitions for table that I've seen before include "Item of furniture; figures presented in columns" , "Set of figures in columns" , "Board; data list" , "Flat board on legs" , "Food stand or numbers array" .)