Crossword Genius

European underground line that gets me to Rome (5)

Ross

I believe the answer is:

metro

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This clue might be a double definition.

'european underground' is the first definition.
'metro' can be an answer for 'underground' (synonyms). I am not sure about the 'european' bit.

'line that gets me to rome' is the second definition.
'metro' can be an answer for 'line' (metro is a kind of line). I'm not sure about the remainder of the definition.

Can you help me to learn more?

(Other definitions for metro that I've seen before include "Parisian underground system" , "Parisian rail system" , "The Paris Underground transport system" , "French underground" , "The underground railway system in Paris" .)

I've seen this clue in the Evening Standard.
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