Shy, for actors (4)
I believe the answer is:
cast
I believe this is a double definition.
'shy' is the first definition.
(both can mean to throw)
'actors' is the second definition.
(group of actors)
'for' is the link.
(Other definitions for cast that I've seen before include "Squint to see" , "Throw - actors - shape something - burrowing worm's sand" , "Set of performers" , "Players < lose" , "'Send forth, a spell perhaps (4)'" .)