/ Dictionary / Index N nightwalker: Meaning and Definition of Find definitions for: night•walk•er Pronunciation: (nīt'wô"kur), [key] — n. a person who walks or roves about at night, esp. a thief, prostitute, etc. an earthworm. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nightwalker (Thesaurus) nighttime night watch Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language