Church accommodating one cleric (8)
I believe the answer is:
minister
'cleric' is the definition.
(thesaurus)
'church accommodating one' is the wordplay.
'church' becomes 'minster' (minster is a kind of church).
'accommodating' means one lot of letters goes inside another.
'one' becomes 'i' (Roman numeral).
'minster' placed around 'i' is 'MINISTER'.
(Other definitions for minister that I've seen before include "Form of address" , "Clergyman - government member" , "One of the clergy" , "Cabinet member" , "Political or religious official" .)