Tatty bed, or said furniture item (9)
I believe the answer is:
sideboard
'furniture item' is the definition.
(I've seen this before)
'tatty bed or said' is the wordplay.
'tatty' is an anagram indicator (I've seen this in other clues).
'bed'+'or'+'said'='bedorsaid'
'bedorsaid' is an anagram of 'SIDEBOARD'.
(Other definitions for sideboard that I've seen before include "Item of dining-room furniture" , "place for silverware?" , "Dior beads (anag.)" , "Piece of dining-room furniture" , "Dining room furniture" .)