1. a warning sound or signal that alerts people to danger
2. a device that makes a warning sound
3. a feeling of fear or worry caused by the possibility of danger

1. to make someone feel frightened or worried

Examples

• The fire alarm went off during the meeting.
• She set her alarm for 6:30 AM.
• The smoke alarm needs new batteries.
• There was alarm in his voice when he called.
• The sudden noise alarmed the children.
• Don’t be alarmed by the loud sound.
• The security alarm was triggered by the wind.