english
1
general::
noun ADJ. dense, impenetrable, thick | tropical | concrete, urban (figurative) This outback area is a far cry from the city's concrete jungle. JUNGLE + NOUN warfare PREP. in ~ a temple deep in the Brazilian jungle | through ~ They hacked their way through dense jungle.
Oxford Collocations Dictionary
2
general::
see LAW OF THE JUNGLE.
American Heritage Idioms