Argument in bank (3)
I believe the answer is:
row
I believe this is a double definition.
'argument' is the first definition.
(thesaurus)
'bank' is the second definition.
(I've seen this in other clues)
'in' is the link.
(Other definitions for row that I've seen before include "Informal quarrel or a straight line" , "Argument; line" , "Propel with oars" , "File" , "Argument; tier" .)