Catch Parisian in revolutionary district (6)
I believe the answer is:
entrap
'catch' is the definition.
(to entrap is to catch with a trap)
'parisian in revolutionary district' is the wordplay.
'parisian in' becomes 'en' ('in' in French).
'revolutionary' shows that the letters should be reversed in order (letters revolve around).
'district' becomes 'part' (I can't justify this - if you can you should believe this answer much more).
'part' in reverse letter order is 'trap'.
'en'+'trap'='ENTRAP'
Can you help me to learn more?
(Other definitions for entrap that I've seen before include "Something to do with gin" , "Trepan (anag.)" , "Snare, trick" , "Catch - frame" , "Parent (anag)" .)