Meet in Parisian bar (9)
I believe the answer is:
encounter
'meet' is the definition.
(I know that meet can be written as encounter)
'in parisian bar' is the wordplay.
'in parisian' becomes 'en' ('in' in French).
'bar' becomes 'counter' (as in the counter of a pub or bar).
'en'+'counter'='ENCOUNTER'
(Other definitions for encounter that I've seen before include "fight" , "Bump into" , "Meet by chance with encore nut" , "See 19" , "Come accross, meet (9)" .)