Wraith

Part of speech: noun (n.)

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.] She was uncertain if it were the gypsy or her wraith. Sir W. Scott. O, hollow wraith of dying fame. Tennyson.

2. Sometimes, improperly, a spirit thought to preside over the waters; -- called also water wraith. M. G. Lewis.