a person who walks or roves about at night, especially a thief, prostitute, etc.
New England. an earthworm.

Nearby words

  1. nightspot,
  2. nightstand,
  3. nightstick,
  4. nighttide,
  5. nighttime,
  6. nightwear,
  7. nighty,
  8. nighty-night,
  9. nigiri,
  10. nigiri-zushi

Origin of nightwalker

First recorded in 1475–85; night + walker

Related formsnight·walk·ing, adjective, noun

Regional variation note

2. See earthworm. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019