Took food back to consume best (6)

I believe the answer is:

defeat

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'best' is the definition.
(I've seen this in another clue)

'took food back to consume' is the wordplay.
'took food back' becomes 'def' (I am not sure about this - if you are sure you should believe this answer much more).
'to consume' becomes 'eat' (to consume something is to eat it).
'def'+'eat'='DEFEAT'

Can you help me to learn more?

(Other definitions for defeat that I've seen before include "Opposite of victory" , "Loss" , "Beat (an opponent)" , "Vanquish, win against" , "Conquest" .)

I've seen this clue in The Times.

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