from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A large city or an urban or inner-city area, especially when characterized as congested and crime-ridden.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A city or urban area, where the landscape is covered by pavement and the environment is alienating and unsafe.
From W. R. Burnett's novel The Asphalt Jungle (1949). (Wiktionary)