Agreement to attempt to get some food in (6)
I believe the answer is:
treaty
'agreement' is the definition.
(I know that agreement can be written as treaty)
'attempt to get some food in' is the wordplay.
'attempt to' becomes 'try' (I've seen this in other clues).
'get' indicates putting letters inside.
'some food in' becomes 'eat' (I can't explain this - if you can you should give a lot more credence to this answer).
'try' placed around 'eat' is 'TREATY'.
'to' is the link.
Can you help me to learn more?
(Other definitions for treaty that I've seen before include "Contract between states" , "Formal agreement between governments" , "Compact - agreement" , "Ratified agreement between states" , "'Pact, accord (6)'" .)