Snooker sticks (4)
I believe the answer is:
cues
'snooker sticks' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cues that I've seen before include "Prompts for action" , "Signals for action" , "Actors' signals" , "Snooker rods" , "Actor's signal" .)