Related Clues:

• Sounds as if they're in line for the pool
• The actor needs it to get in line, and for his line, by the sound of it
• The actor has to wait for it in the billiard room
• Might make a cannon with it for the actor, perhaps
• That shows the actor when to start to make a cannon
• The actor has to wait for this to make a cannon
• For billiards at any stage
• Sounds as if you follow what the actor gets
• Chalked stick
• Entrance sign?
• Theater signal
• What a walk-on awaits
• It's chalked before a shot
• Stick on a table
• Act as a prompter in the theater