Broadway group (4)
I believe the answer is:
cast
'broadway group' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cast that I've seen before include "'Ne'er .... a clout till May be out'" , "Collectively, the actors in a play" , "Complement of actors in a play" , "Throw a fishing line" , "Squint to see" .)