1. cone-shaped devices that amplify the voice or other sounds

1. speaks through a megaphone or amplifies one’s voice loudly

Examples

• The coach used megaphones to give instructions during practice.
• Police officers carried megaphones to address the crowd.
• The cheerleaders’ megaphones helped project their voices across the stadium.
• Emergency workers rely on megaphones during disaster response.
• She megaphones the daily announcements from the school office.
• The protest organizer megaphones slogans to rally supporters.
• Lifeguards use megaphones to warn swimmers about dangerous conditions.