Parisian who probes top lunch where food's lacking (6)
I believe the answer is:
'parisian who probes top lunch where food's lacking' is the definition.
Although both the answer and definition are adjectives, I can't see how one could define the other.
'parisian who probes top' is the wordplay.
'parisian who' becomes 'qui' (I've seen this in other clues).
'probes' means one lot of letters goes inside another.
'top' becomes 'lid' (lid is a kind of top).
'qui' put into 'lid' is 'LIQUID'.
Can you help me to learn more?
(Other definitions for liquid that I've seen before include "convertible", "substance in a fluid state", "Melted", "Something like water or oil", "perhaps, able to run".)