Meaning of jungle

jun•gle

1. a wild land overgrown with dense vegetation, often nearly impenetrable, esp. tropical vegetation or a tropical rain forest.
2. a tract of such land.
3. a wilderness of dense overgrowth; a piece of swampy, thickset forestland.
4. any confused mass or agglomeration of objects; jumble: a jungle of wrecked automobiles.
5. something that baffles or perplexes; maze: a jungle of legal double-talk.
6. a scene of violence and struggle for survival: The neglected prison was a jungle for its inmates.
7. a place or situation of ruthless competition: the advertising jungle.
8. a hobo camp.

Jungle The

1. a novel (1906) by Upton Sinclair.