Define part of week and finish (4,2,1,3)
I believe the answer is:
call it a day
'finish' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for call it a day that I've seen before include "Abandon work for now" , "Stop work" , "announce decision to quit" , "Set the style for a 24-hour period" , "pack up" .)