Ghost n.
 1. The spirit; the soul of man. [Obs.]
    Then gives her grieved ghost thus to lament.   --Spenser.
 2. The disembodied soul; the soul or spirit of a deceased person; a spirit appearing after death; an apparition; a specter.
    The mighty ghosts of our great Harrys rose.   --Shak.
 I thought that I had died in sleep,
 And was a blessed ghost.   --Coleridge.
 3. Any faint shadowy semblance; an unsubstantial image; a phantom; a glimmering; as, not a ghost of a chance; the ghost of an idea.
    Each separate dying ember wrought its ghost upon the floor.   --Poe.
 4. A false image formed in a telescope by reflection from the surfaces of one or more lenses.
 Ghost moth Zool., a large European moth (Hepialus humuli); so called from the white color of the male, and the peculiar hovering flight; -- called also great swift.
 Holy Ghost, the Holy Spirit; the Paraclete; the Comforter; Theol. the third person in the Trinity.
 To give up the ghost or To yield up the ghost, to die; to expire.
    And he gave up the ghost full softly.   --Chaucer.
    Jacob . . . yielded up the ghost, and was gathered unto his people.   --Gen. xlix. 33.