Polish currency unit (5)
I believe the answer is:
zloty
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">polish currency unit</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for zloty that I've seen before include "Polish monetary unit" , "Polish unit of currency" , "Monetary unit in Poland" , "Currency of Poland" , "Polish money" .)