Kind of metal – press (4)
I believe the answer is:
iron
I believe this is a double definition.
'kind of metal' is the first definition.
(I know that iron is a type of metal)
'press' is the second definition.
(I know that iron is a kind of press)
(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" .)