Lot having eaten all the pies finally replete (4)
I believe the answer is:
fate
'lot' is the definition.
(I know that lot can be written as fate)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for fate that I've seen before include "Predetermined end" , "Clotho, Lachesis or Atropos" , "Predestination" , "What must be" , "E.g. Clotho, Atropos" .)