Crossword Genius

Top case involving Frenchmen (6)

Ross

I believe the answer is:

summit

'top' is the definition.
('summit' can be a synonym of 'top')

'case involving frenchmen' is the wordplay.
'case' becomes 'suit' ('suit' can be a synonym of 'case').
'involving' is an insertion indicator.
'frenchmen' becomes 'mm'.
'suit' going around 'mm' is 'SUMMIT'.

(Other definitions for summit that I've seen before include "international diplomacy" , "Topmost point" , "Highest point (of hill)" , "Top of a mountain, or meeting between heads of government" , "Apex" .)

I've seen this clue in The Independent.
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