What does the idiom died means?

The idiom "died" doesn't have a common meaning on its own. It's likely you're thinking of an idiom that includes "died" in it, such as:

* "Died and gone to heaven": This means something is incredibly good or enjoyable.

* "Died laughing": This means someone laughed so hard they almost fainted or passed out.

* "Died in the wool": This means someone is stubborn or set in their ways.

* "Died a thousand deaths": This means someone experienced a lot of anxiety or fear.

Could you please provide more context about the idiom you're asking about? I'd be happy to help you understand its meaning.