Slapstick projectile (3)
I believe the answer is:
pie
'slapstick projectile' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pie that I've seen before include "Pastry-covered dish" , "In the sky, this is wishful thinking" , "steak might go in this" , "Pecan or blueberry dish?" , "See 6" .)