Webster's Revised Unabridged Dictionary · 1913

Ghost

Ghost (gōst) , noun

[Old English gast, gost, soul, spirit, Anglo-Saxon gāst breath, spirit, soul; akin to Old Saxon gēst spirit, soul, Dutch geest, German geist, and prob. to English gaze, ghastly.]

1.
The spirit; the soul of man. [Obsolete]
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. — Shakespeare
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.
And he gave up the ghost full softly. — Chaucer
Jacob... yielded up the ghost, and was gathered unto his people — Gen. xlix. 33
Collocations (3)
Ghost moth (Zoology) , 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 (Theology) , the Holy Spirit; the Paraclete; the Comforter; (Theology) the third person in the Trinity.
To give up the ghost or To yield up the ghost , to die; to expire.

Ghost , intransitive verb

To die; to expire. [Obsolete] — Sir P. Sidney

Ghost , transitive verb

To appear to or haunt in the form of an apparition. [Obsolete] — Shakespeare