Claim on a property (4)
I believe the answer is:
lien
'claim on a property' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lien that I've seen before include "Legal claim on the property of another" , "The right to take property if an obligation is not met" , "Right to retain property until a debt is paid" , "Legal right over the Nile" , "Right to keep property" .)