Way into actual robing room (6)
I believe the answer is:
vestry
'robing room' is the definition.
(room where a priest puts on robes)
'way into actual' is the wordplay.
'way' becomes 'st' (abbreviation for street).
'into' is an insertion indicator.
'actual' becomes 'very' (synonyms).
'st' going inside 'very' is 'VESTRY'.
(Other definitions for vestry that I've seen before include "Parochial meeting-room in church" , "Church room where clergy dress themselves" , "Church changing room" , "Somewhere in church" , "Church robing-room" .)