Hint of hunger (4)
I believe the answer is:
pang
'hint of hunger' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pang that I've seen before include "Stab of pain" , "Sudden feeling of pain or conscience" , "Mental pain or distress" , "Sudden sharp pain" , "Sudden feeling of hunger or pain" .)