Support from the bank (5)
I believe the answer is:
shore
I believe this is a double definition.
'support' is the first definition.
(I know that shore is a more specific form of support)
'bank' is the second definition.
(I know that shore is a type of bank)
'from the' acts as a link.
(Other definitions for shore that I've seen before include "Country" , "Coast" , "Prop; coastline" , "Horse (anag.)" , "Beach; prop (up)" .)