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