Admission from fool outside cold church (6)
I believe the answer is:
access
'admission' is the definition.
(I've seen this before)
'fool outside cold church' is the wordplay.
'fool' becomes 'ass' (both can mean a stupid person).
'outside' indicates putting letters inside.
'cold' becomes 'c' (eg on taps).
'church' becomes 'CE' (abbreviation for Church of England).
'c'+'ce'='cce'
'ass' placed around 'cce' is 'ACCESS'.
'from' is the link.
(Other definitions for access that I've seen before include "The right to use something or see someone" , "Point of entry" , "Means of entering, way in" , "Doorway" , "Means or right of entry" .)