Chair or bench (4)
I believe the answer is:
seat
This clue is a double definition.
'chair' is the first definition.
(something to sit on)
'bench' is the second definition.
(I know that bench can be written as seat)
(Other definitions for seat that I've seen before include "Place to sit" , "Take one and sit" , "Sitting place" , "'A chair, say (4)'" , "Parliamentary constituency" .)