n. 1. The lower of inferior world; the world which is under the heavens; the earth. [ 1913 Webster ]
That overspreads (with such a reverence) This underworld. Daniel. [ 1913 Webster ]
2. The mythological place of departed souls; Hades. [ 1913 Webster ]
3. The portion of the world which is below the horizon; the opposite side of the world; the antipodes. [ R. ] [ 1913 Webster ]
Fresh as the first beam glittering on a sail, That brings our friends up from the underworld. Tennyson. [ 1913 Webster ]
4. The inferior part of mankind. [ R. ] Atterbury. [ 1913 Webster ]