Virile doctor going round a church (5)
I believe the answer is:
macho
'virile' is the definition.
(I've seen this before)
'doctor going round a church' is the wordplay.
'doctor' becomes 'mo' (medical officer).
'going round' means one lot of letters goes inside another (some letters go around others).
'church' becomes 'ch' (abbreviation on maps etc).
'a'+'ch'='ach'
'mo' going around 'ach' is 'MACHO'.
(Other definitions for macho that I've seen before include "Jock" , "Aggressively masculine" , "Typically tough (guy)" , "Assertively masculine" , "Showily virile" .)