Meeting in French bar (9)
I believe the answer is:
Here is my best explanation:
'meeting' is the definition.
('encounter' can be a synonym of 'meeting')
'in french bar' is the subsidiary indication.
'in french' becomes 'en' ('en' can be French for 'in' e.g. en France).
'bar' becomes 'counter' (I've seen this in other clues).
(Other definitions for encounter that I've seen before include "Come upon, meet", "Face", "Bump into", "Meet by chance or enexpectedly", "Meeting", "battle", "Come accross, meet (9)", "tackle", "A meeting" and "fight".)