1. People who walk or travel during the night, especially those who do so regularly or habitually.
Usage: Plural form of nightwalker; Can refer to people engaged in nighttime activities such as security guards, night shift workers, or those with insomnia
2. In folklore and fiction, supernatural creatures or beings that are active at night.
Usage: Literary or fantasy usage; Often refers to vampires, ghosts, or other mythical nocturnal entities

Examples

• The security guards are nightwalkers who patrol the building after dark.
• Many nightwalkers in the city use well-lit streets for safety.
• The novel featured nightwalkers that emerged from the shadows.
• Insomniacs are often involuntary nightwalkers.
• The neighborhood has several nightwalkers who exercise during late hours.
• In the fantasy series, nightwalkers possessed supernatural powers.