any large, crowded city or urban area regarded as a dangerous place where people are engaged in a struggle for survival.
Words nearby asphalt jungle
Origin of asphalt jungle
apparently coined by George Ade in a fable published in 1917; popularized by a novel of the same title (1949) by W.R. Burnett (born 1899), U.S. novelist and screenwriter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020