The French coming inside down light meal (5)
I believe the answer is:
salad
'light meal' is the definition.
(I've seen this in another clue)
'the french coming inside down' is the wordplay.
'the french' becomes 'la' (one of the French words for 'the').
'coming inside' is an insertion indicator.
'down' becomes 'sad' (I've seen this in another clue).
'la' going inside 'sad' is 'SALAD'.
(Other definitions for salad that I've seen before include "Cold dish of various vegetables," , "A dish of lettuce and vegetables" , "Curve" , "Raw vegetable dish" , "Mainly raw cold dish" .)