Put up with belly (7)
I believe the answer is:
stomach
I believe this is a double definition.
'put up with' is the first definition.
('stomach' can be a synonym of 'put up with')
'belly' is the second definition.
(I've seen this before)
(Other definitions for stomach that I've seen before include "Bear - belly" , "Courage - guts" , "Saclike organ" , "Endure, accept" , "Bag-like part of the alimentary canal" .)