What does Die-cast mean?

I know Hot Wheels and Matchbox and others are referred to as "Die-cast" toys. What exactly does "Die-cast" mean?

See in Wikipedia:

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The term die-cast toy here refers to any toy or collectible model produced by using the die casting method. The toys are made of metal and plastic, the metal used commonly is zamak (or Mazak), an alloy of zinc and aluminium. Zamak is also referred to as white metal or pot metal. The most common die-cast toys are scale models of automobiles, aircraft, construction equipment and trains, although almost anything can be produced by this method.

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Full entry:
Die-cast toy - Wikipedia, the free encyclopedia

Thanks, but what does the "Die-casting" method mean exactly? :)

This Wikipedia page explains the Die Casting process in detail:

Die casting - Wikipedia, the free encyclopedia