A little cut by top of pot-bellied stomach (8)
I believe the answer is:
appetite
'bellied stomach' is the definition.
'appetite' can be an answer for 'stomach' (I've seen this before). I am not sure about the 'bellied' bit.
'a little cut by top of pot' is the wordplay.
'little' becomes 'petite' (similar in meaning).
'cut by' means one lot of letters goes inside another (some letters cut into others).
'top of' suggests taking the first letters.
The first letter of 'pot' is 'p'.
'petite' placed around 'p' is 'ppetite'.
'a'+'ppetite'='APPETITE'
Can you help me to learn more?
(Other definitions for appetite that I've seen before include "Hunger; desire" , "Physical desire as for food" , "Natural desire to satisfy a need" , "enthusiasm" , "A feeling of craving something" .)