Actors squint (4)
I believe the answer is:
cast
I believe this is a double definition.
'actors' is the first definition.
(group of actors)
'squint' is the second definition.
(I've seen this before)
(Other definitions for cast that I've seen before include "Actors; toss" , "players for > fling" , "'Send forth, a spell perhaps (4)'" , "Shed - actors" , "Throw; shed; mould" .)