meaning of underworld
1. The lower of inferior world; the world which is under the heavens; the earth.
2. The mythological place of departed souls; Hades.
3. The portion of the world which is below the horizon; the opposite side of the world; the antipodes.
4. The inferior part of mankind.
5. religion the world of the dead; "he didnt want to go to hell when he
">died"