Top male entertained by a church (4)
I believe the answer is:
acme
'top' is the definition.
(synonyms)
'male entertained by a church' is the wordplay.
'male' becomes 'm' (common abbreviation).
'entertained by' indicates putting letters inside (inserted letters are hosted or entertained).
'church' becomes 'CE' (Church of England).
'a'+'ce'='ace'
'm' inserted inside 'ace' is 'ACME'.
(Other definitions for acme that I've seen before include "Summit - zenith" , "Highest stage of development" , "Top; peak" , "Culminating point" , "Summit - climax" .)