ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
Etymology: Middle English, from night (I) + walker
1.
a. : a person who roves about at night especially with criminal intent
b. : a prostitute who walks the street at night
2.
a. : an animal active at night
b. chiefly North : night crawler