Division in a church (6)
I believe the answer is:
schism
'division in a church' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for schism that I've seen before include "Breach or division within church" , "Ecclesiastical breakdown" , "Formal split in a religion" , "Friction or division in church organisation" , "Splinter group" .)