Financial institution (4)
'financial institution' is the definition.
(bank is a kind of financial institution)
This is all the clue.
(Other definitions for bank that I've seen before include "store" , "deposit" , "Row" , "Long mound; rely (on)" , "Edge (of river) - tier (of oars)" .)
'financial institution' is the definition.
(merchant bank is a kind of financial institution)
This is the entire clue.
(Another definition for merchant bank that I've seen is " Financial institution (not in the High Street)".)