A property may have one on it (4)
I believe the answer is:
lien
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a property may have one on it</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for lien that I've seen before include "Sequestration order" , "Legal claim on the property of another" , "Right to keep property" , "Legal right over the Nile" , "Legal claim on Nile" .)