Organ for bear (7)
I believe the answer is:
stomach
I believe this is a double definition.
'organ' is the first definition.
(stomach is a kind of organ)
'for bear' is the second definition.
(both can mean to endure or tolerate)
(Other definitions for stomach that I've seen before include "Mac hosts his organ" , "Endure, accept" , "Digestive organ" , "Tolerate; appetite" , "Corporation" .)