Article produced by diocese making one boil (6)
I believe the answer is:
seethe
'one boil' is the definition.
(thesaurus)
'article produced by diocese' is the wordplay.
'article' becomes 'the' (the 'definite article' part of speech).
'produced by' means one lot of letters go next to another.
'diocese' becomes 'see' (I've seen this before).
'the' after 'see' is 'SEETHE'.
'making' acts as a link.
(Other definitions for seethe that I've seen before include "(Of liquid) boil" , "foam at the mouth" , "Boil or become very angry" , "exhibit anger" , "Surge or foam, as if boiling" .)