Couple of the French get nothing (3)
I believe the answer is:
Here is my best explanation:
'couple' is the definition.
('duo' can be a synonym of 'couple')
'of the french get nothing' is the wordplay.
'of the french' becomes 'du'.
'get' means one lot of letters go next to another.
'nothing' becomes 'o' (looks like zero - 0).