Goblet girl found under church (7)
I believe the answer is:
chalice
'goblet' is the definition.
(synonyms)
'girl found under church' is the wordplay.
'girl' becomes 'alice' (girl's name).
'found under' is a charade indicator (letters next to each other).
'church' becomes 'ch' (common abbreviation).
'alice' put after 'ch' is 'CHALICE'.
(Other definitions for chalice that I've seen before include "cup used in company with host" , "Church wine cup" , "Sacred cup for consecrated wine" , "Church vessel" , "bowl" .)