Enchant? Church might (5)
I believe the answer is:
charm
'enchant?' is the definition.
(synonyms)
'church might' is the wordplay.
'church' becomes 'ch' (abbreviation on maps etc).
'might' becomes 'arm' (both can mean strength or power).
'ch'+'arm'='CHARM'
(Other definitions for charm that I've seen before include "Enchant" , "Group of finches" , "Talisman; flock of goldfinches" , "Amulet; attractive quality" , "Delight; magical object" .)