Half-cut priest dined in grounds (6)
I believe the answer is:
estate
'grounds' is the definition.
(I've seen this before)
'half-cut priest dined' is the wordplay.
'half cut' suggests halving the letters.
'dined' becomes 'ate'.
'priest' halved is 'est'.
'est'+'ate'='ESTATE'
'in' is the link.
(Other definitions for estate that I've seen before include "Large car; property" , "My wealth" , "The whole of one's worldly goods" , "(see 1)" , "All of one's assets and liabilities" .)