Divorce finally, say, giving grounds (6)
I believe the answer is:
estate
'grounds' is the definition.
(I've seen this before)
'divorce finally say' is the wordplay.
'finally' suggests the final letters.
'say' becomes 'state' (synonyms).
The final letter of 'divorce' is 'e'.
'e'+'state'='ESTATE'
'giving' is the link.
(Other definitions for estate that I've seen before include "Property - tea set (anag)" , "Follow on" , "Group of suburban houses or industrial units" , "Property with large grounds" , "(see 1)" .)