Stack of bills (3)
I believe the answer is:
wad
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stack of bills</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for wad that I've seen before include "Bundle of soft material or of banknotes" , "Pad of loose material used for packing" , "Small mass of soft material" , "Small bundle" , "A bundle as of documents or banknotes" .)