Type of sofa (12)
I believe the answer is:
chesterfield
'type of sofa' is the definition.
This is all the clue.
(Other definitions for chesterfield that I've seen before include "Sofa; overcoat" , "Midlands town" , "He wrote, advising his son" , "Heretics fled (anag) -- Derbyshire town with a crooked church spire" , "Derbyshire town - sofa" .)