concrete jungle

American  

[kon-kreet juhng-guhl, kong-] / ˈkɒn krit ˈdʒʌŋ gəl, ˈkɒŋ- /

noun

1. any large, crowded city or urban area with little greenery or access to nature, sometimes one regarded as a dangerous place where people are engaged in a struggle for survival.

   Central Park is a breath of fresh air and nature in the middle of the concrete jungle that is New York City.

   The campaign ad plays to middle-class fears that an increasing crime rate is the first sign of a descent into violent anarchy and the concrete jungle.

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Example Sentences

Concrete jungle: For every ton of traditional concrete a ton of CO2 is produced also The substance itself is even dull.

From BBC • Apr. 11, 2011