Meal that might take a day? (5)
I believe the answer is:
feast
'meal' is the definition.
(I know that feast is a type of meal)
'might take a day?' is the wordplay.
I cannot really see how this works, but
'a' is within the answer.
The remaining letters 'fest' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'that' acts as a link.
Can you help me to learn more?
(Other definitions for feast that I've seen before include "Abundant meal" , "Big meal" , "Celebratory meal" , "Lavish spread" , "Extravagant meal" .)