Late-night fridge visit (4)
I believe the answer is:
raid
'late-night fridge visit' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for raid that I've seen before include "Sudden and surprise attack" , "Finch and Bronson starred in . . . . On Entebbe" , "Enter a territory and take spoils" , "Smash-and-grab?" , "military operation" .)