Feeling hot meal is missing starter (5)
I believe the answer is:
'feeling' is the definition.
(hunch is a kind of feeling)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for hunch that I've seen before include "Premonition; hump", "Guess -- sit with bad posture", "Vague suspicion", "Inkling", "Intuitive guess".)