Behalf (4)
I believe the answer is:
sake
'behalf' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sake that I've seen before include "alcoholic drink out East" , "Jap. alcoholic drink from rice; for Pete's -" , "'Reason, purpose (4)'" , "Beverage" , "Japanese alcoholic drink make from rice" .)