1. a person who gives warning or alerts others to danger

Examples

• The lighthouse keeper served as a warner to ships approaching the rocky coast.
• She appointed herself the warner of the group, always checking for potential hazards.
• The weather service acts as a warner for severe storms.
• He was known as the village warner, alerting everyone to approaching dangers.
• The security guard functioned as a warner for any suspicious activity.
• Local residents relied on him as their warner during flood season.