Acquire ground as property (4)
I believe the answer is:
land
This clue is a triple definition!
'acquire' is the first definition.
(I know that land is a more specific form of the action acquire)
'ground' is the second definition.
(synonyms)
'as' acts as a link.
'property' is the third definition.
(kind of property)
(Other definitions for land that I've seen before include "Take catch" , "Disembark" , "See 22" , "nation" , "Put in" .)