Finished or shut (6)
I believe the answer is:
closed
I believe this is a double definition.
'finished' is the first definition.
(closing is a kind of finishing)
'shut' is the second definition.
(I know that shut can be written as closed)
(Other definitions for closed that I've seen before include "Exclusive" , "clinched the sale" , "Shut" , "successfully completed" , "Not open or available to all" .)