Bank claim (4)
I believe the answer is:
lien
'bank 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 right over the Nile" , "Legal claim on Nile" , "Legal claim on the property of another" , "Sequestration order" , "Legal right to detain property" .)