State train noted for its speed (7)

I believe the answer is:

express

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'state' is the definition.
(I know that state is a more specific form of the action express)

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for express that I've seen before include "Of train, travelling rapidly with few or no stops" , "Swift" , "Former journalists < not stopping < newspaper" , "for a specific purpose?" , "Verbalize" .)

I've seen this clue in The Irish Independent.

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