Piece of furniture in office (6)
I believe the answer is:
bureau
I believe this clue is a double definition.
'piece of furniture' is the first definition.
(bureau is a kind of piece of furniture)
'office' is the second definition.
('bureau' can be a synonym of 'office')
'in' acts as a link.
(Other definitions for bureau that I've seen before include "Foreign office" , "Government department, agency" , "Writing desk with drawers" , "Piece of furniture with drawers" , "Ancient chipped flint" .)