Letter before Papa (5)
I believe the answer is:
oscar
'letter before papa' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oscar that I've seen before include "Hollywood statuette given as annual award" , "to wit involved in row" , "- - Hammerstein (musicals)" , "Librettist Hammerstein, d. 1960" , "trophy" .)