Win real estate (4)
I believe the answer is:
land
I believe this is a double definition.
'win' is the first definition.
(both can mean to secure or obtain)
'real estate' is the second definition.
(land is a kind of real estate)
(Other definitions for land that I've seen before include "SECOND PART OF 15" , "Come down to earth" , "Secure" , "Light" , "soil" .)