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1. The spirit of a dead person, especially one that is believed to appear to the living in bodily form or to haunt specific locations.
2. A person's spirit or soul: was sick for months and finally gave up the ghost.
3. A returning or haunting memory or image.
a. A slight or faint trace: just a ghost of a smile.
b. The tiniest bit: not a ghost of a chance.
5. A faint, unwanted image, as:
a. An unwanted image on a television or radar screen caused by reflected waves.
b. A displaced image in a photograph caused by the optical system of the camera.
c. An unwanted spectral line caused by imperfections in a diffraction grating.
d. A displaced image in a mirror caused by reflection from the front of the glass.
6. Informal A ghostwriter.
a. A nonexistent publication listed in bibliographies.
b. A fictitious employee or business.
8. Physiology A red blood cell having no hemoglobin.
v. ghost·ed, ghost·ing, ghosts
1. Informal To engage in ghostwriting.
2. To move noiselessly like a ghost: "Two young deer ghosted out of the woods" (Nancy M. Debevoise).
1. To haunt.
2. Informal To ghostwrite: was hired to ghost the memoirs of a famous executive.
[Middle English gost, from Old English gāst, breath, spirit.]
adj, ghostier or ghostiest
pertaining to ghosts