Kind of metal – press (4)
I believe the answer is:
iron
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">kind of metal</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that iron is a type of metal)</span><br/ ><br/ >'<span class="explanation-format__original">press</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that iron is a kind of press)</span><br/ ><br/ ></span>
(Other definitions for iron that I've seen before include "Main part of steel" , "Main component of steel" , "Smooth; element" , "Smoother - metal" , "Heavy metal that rusts easily" .)