The underground, in Paris, gives me a bit of trouble (5)
I believe the answer is:
metro
'the underground' is the definition.
('metro' can be a synonym of 'underground')
'paris gives me a bit of trouble' is the wordplay.
I cannot quite understand how this works, but
'me' is present in the answer.
'bit' could be 'o' (resembles 0, a binary digit or bit) and 'o' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for metro that I've seen before include "Paris subway" , "The underground railway system in Paris" , "Parisian rail system" , "Parisian underground system" , "French underground" .)