Ghost

1. v. t. To appear to or haunt in the form of an apparition.
2. n. The spirit; the soul of man.
3. n. The disembodied soul; the soul or spirit of a deceased person; a spirit appearing after death; an apparition; a specter.
4. n. Any faint shadowy semblance; an unsubstantial image; a phantom; a glimmering; as, not a ghost of a chance; the ghost of an idea.
5. n. A false image formed in a telescope by reflection from the surfaces of one or more lenses.
6. v. i. To die; to expire.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.