Filling dish, not one intended for rabbits (4,6)
I believe the answer is:
main course
This clue could be a double definition.
'filling' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'dish not one intended for rabbits' is the second definition.
'main course' can be an answer for 'dish' (I've seen this before). I'm unsure of the 'not one intended for rabbits' bit.
Can you help me to learn more?
(Other definitions for main course that I've seen before include "A substantial amount to digest" , "sailors find trapping a lot of wind" , "Marine biology, perhaps" , "big dish?" , "Oceanography classes" .)