Railway timetable extract (3)

I believe the answer is:

met

I'm a little stuck... Click here to teach me more about this clue!

'railway timetable extract' is the definition.
I can't tell whether this defines the answer.

'railway timetable extract' is the wordplay.
'MET' is hidden in amongst the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for met that I've seen before include "Encountered pro tem" , "Encountered, came into contact" , "Came across - police in London" , "gathered together" , "Encountered by chance or arrangement" .)

I've seen this clue in the Evening Standard.

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