Pronunciation: (un'dur-wûrld"), [key]
1. the criminal element of human society.
2. the imagined abode of departed souls or spirits; Hades.
3. a region below the surface, as of the earth or a body of water.
4. the opposite side of the earth; the antipodes.
5. Archaic.the earth.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.