1. a person who walks about at night, especially habitually
2. a prostitute who solicits customers on the street at night
Usage: dated; offensive

Examples

• The security guard noticed a nightwalker moving through the park after midnight.
• Local residents complained about nightwalkers disturbing the peace.
• The insomniac had become a regular nightwalker in his neighborhood.
• Police increased patrols to monitor nightwalkers in the downtown area.
• She was known as a nightwalker who roamed the streets until dawn.