Gluttonise (7)
I believe the answer is:
overeat
'gluttonise' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for overeat that I've seen before include "ignore threat of a big corporation?" , "pig out?" , "Consume too much like a glutton" , "Binge" , "Consume too much food, stuff your stomach" .)