Property claim (4)
I believe the answer is:
lien
'property claim' 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" , "Legal right over the Nile" , "Legal claim on Nile" , "The right to take property if an obligation is not met" , "Right to another's property, if an obligation is not discharged" .)