Officers' room in a state (4)
I believe the answer is:
mess
This could be a double definition.
'officers room' is the first definition.
'mess' can be an answer for 'room' (mess is a kind of room). I'm not sure about the 'officers' bit.
'state' is the second definition.
(in a state means in a mess)
'in a' acts as a link.
Can you help me to learn more?
(Other definitions for mess that I've seen before include "Eating place" , "Where sailors eat" , "Communal dining room" , "dirty and unpleasant" , "Where those who serve eat" .)