(TOOL) [noun] [C] - a shaped piece of metal or other hard material used to form metal, plastic etc., or a mould (= a hollow container) used for forming liquid metal or plastic into a particular shapeIf you die-cast an object, or it is die-cast, you make it by pouring liquid metal, plastic, etc., usually under pressure, into a mould.
DIE
Meaning of DIE in English
Cambridge English vocab. Кембриджский английский словарь. 2012