Hepatic organ (5)
I believe the answer is:
liver
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hepatic organ</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for liver that I've seen before include "Bodily organ" , "Internal organ" , "Large organ of body" , "Abdominal organ" , "Vital organ" .)