Greenback
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">greenback</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bill that I've seen before include "Poster' charge" , "amount owed" , "Notice - printed advertisement" , "beak demanded" , "Account; beak" .)