Kid not finishing meals (4)
I believe the answer is:
teas
'meals' is the definition.
(tea is a kind of meal)
'kid not finishing' is the wordplay.
'kid' becomes 'tease' (both can mean to mock).
'not finishing' means to remove the last letter.
'tease' with its last letter removed is 'TEAS'.
(Other definitions for teas that I've seen before include "Beverage made by steeping leaves in water" , "Hot drinks" , "Afternoon meals" , "Beverages from leaves" .)