Internal organs of bears (8)
I believe the answer is:
stomachs
This clue might be a double definition.
'internal organs' is the first definition.
'stomachs' can be an answer for 'organs' (I have seen 'Saclike organs ' mean 'stomachs' so perhaps 'organs' could also mean 'stomachs'). I'm unsure of the 'internal' bit.
'bears' is the second definition.
('stomach' can be a synonym of 'bear')
'of' is the link.
Can you help me to learn more?
(Other definitions for stomachs that I've seen before include "Saclike organs of the body" , "bibles, for example" , "Four of these for bulls" , "Tummies" , "Bears to eat or puts up with something" .)