Money transfer system via banks (4)
I believe the answer is:
giro
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">money transfer system via banks</span>' is the definition.<br/ ><span class="explanation-format__explanation">(payment between banks initiated by payer)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for giro that I've seen before include "dish from Greece" , "Credit transfer; sounds like stable spinning wheel" , "System for monetary transfers used for unemployment benefit etc" , "Banking system" , "Cheque" .)