Potato chip for priest at the end of the day (3)
I believe the answer is:
fry
'potato chip' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'priest at the end of the day' is the wordplay.
'priest' becomes 'fr' (abbreviation for father).
'at the end of' suggests the final letters.
The final letter of 'day' is 'y'.
'fr'+'y'='FRY'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for fry that I've seen before include "Cook in fat; young fish" , "Newly-hatched fish" , "Elizabeth > Cook" , "Newly-hatched fishes for the pan?" , "Christopher" .)