Chaste line taken by church article (5)
I believe the answer is:
clean
'chaste' is the definition.
(thesaurus)
'line taken by church article' is the wordplay.
'line' becomes 'l'.
'taken by' means one lot of letters goes inside another.
'church' becomes 'ce' (abbreviation for Church of England).
'article' becomes 'an' (indefinite article).
'l' inserted within 'ce' is 'cle'.
'cle'+'an'='CLEAN'
(Other definitions for clean that I've seen before include "Not prohibited" , "Spick and span" , "Non-polluting" , "How confessor comes" , "Unspoiled" .)