Film portrays some young children hunting on tips (6)
I believe the answer is:
psycho
'film' is the definition.
(Alfred Hitchcock film)
'portrays some young children hunting on tips' is the wordplay.
'tips' says to take the initial letters (tip can refer to the top end of something).
The initial letters of 'portrays some young children hunting on' is 'PSYCHO'.
(Other definitions for psycho that I've seen before include "Shy cop (anag) - 1960 movie" , "Alfred Hitchcock thriller" , "Bates Motel horror film" , "In brief, person with severe mental disorder - ask Alfred Hitchcock" , "> fruitcake" .)