Wraith, n.
(rāth), n. [Probably corrupted from swairth, swarth, an apparition of a person about to die, from swarth, gloomy.]
Sense 1. An apparition of a person in his exact likeness, seen before death, or a little after; hence, an apparition; a specter; a vision; an unreal image. [Scot.]
“O, hollow wraith of dying fame!” Tennyson.
She was uncertain whether it were the gipsy or her wraith. W. Scott.
Sense 2. A spirit supposed to preside over the waters. [Improper.] See WATER-WRAITH. Lewis.