1. a board in a theater on which notices and call times for actors are posted
Usage: theater/performing arts
2. a system or device used to summon or notify people, especially in a workplace or facility
Usage: general use

Examples

• The actors checked the callboard before rehearsal to see their call times.
• She posted the schedule on the callboard so everyone would know when to arrive.
• The theater's callboard displayed announcements about costume fittings and stage changes.
• He glanced at the callboard in the green room to confirm his entrance cue.
• The production assistant updated the callboard daily with new information for the cast.