English to English

noun (n)

• a mental representation of some haunting experience(noun.cognition)

  Synonym:
  ghost, shade, specter, spectre, spook
  

  source: wordnet30
• An apparition of a person in his exact likeness, seen before death, or a little after; hence, an apparition; a specter; a vision; an unreal image.(noun)

  source: webster1913