Doctor man's cut in private room (7)
I believe the answer is:
sanctum
'private room' is the definition.
(I've seen this before)
'doctor man's cut' is the wordplay.
'doctor' indicates anagramming the letters.
'mans'+'cut'='manscut'
'manscut' anagrammed gives 'SANCTUM'.
'in' acts as a link.
(Other definitions for sanctum that I've seen before include "Private/sacred place" , "somewhere private" , "Place of total privacy" , "SECOND PART OF 3" , "Room safe from disturbance" .)