Webster's Revised Unabridged Dictionary · 1913

Vanish

Vanish (van"ish) , intransitive verb

[Old English vanissen, Old French vanir (in comp.): compare Old French envanir, esvanir, esvanuir, French s'évanouir; from Latin vanus empty, vain; compare Latin vanescere, evanescere, to vanish. See Vain, and compare Evanescent,-ish.]

1.
To pass from a visible to an invisible state; to go out of sight; to disappear; to fade; as, vapor vanishes from the sight by being dissipated; a ship vanishes from the sight of spectators on land.
The horse vanished... out of sight. — Chaucer
Go; vanish into air; away! — Shakespeare
The champions vanished from their posts with the speed of lightning. — Sir W. Scott
Gliding from the twilight past to vanish among realities. — Hawthorne
2.
To be annihilated or lost; to pass away.
All these delights will vanish. — Milton

Vanish (van"ish) , noun

(Phonetics) The brief terminal part of a vowel or vocal element, differing more or less in quality from the main part; as, a as in ale ordinarily ends with a vanish of i as in ill, o as in old with a vanish of oo as in foot. — Rush

The vanish is included by Mr. Bell under the general term glide.