Gather it's the back room and the outside bed (7)
I believe the answer is:
collect
'gather' is the definition.
(synonyms)
'the back room and the outside bed' is the wordplay.
'the back' is a reversal indicator.
'room' becomes 'cell' (cell is a kind of room).
'and' means one lot of letters go next to another.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'outside bed' becomes 'oc' (I can't explain this - if you can you should believe this answer much more).
'cell' after 't' is 'tcell'.
'tcell'+'oc'='tcelloc'
'tcelloc' reversed gives 'COLLECT'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for collect that I've seen before include "mass" , "Come together" , "Fetch" , "Accumulate" , "Amass; a prayer" .)