jungle

noun

1. (countable, uncountable)A large, undeveloped, humid forest, especially in a tropical region, that is home to many wild plants and animals; a tropical rainforest.

   “As Tarzan walked down the wild cañon beneath the brilliant African moon the call of the jungle was strong upon him. The solitude and the savage freedom filled his heart with life and buoyancy. Again he was Tarzan of the Apes—every sense alert against the chance of surprise by some jungle enemy—yet treading lightly and with head erect, in proud consciousness of his might.”

2. (South-Asia, countable, uncountable)Any uncultivated tract of forest or scrub habitat.
3. (colloquial, countable, uncountable)A place where people behave ruthlessly, unconstrained by law or morality.

   “It’s a jungle out there.”

   “'How do you like this corner of the jungle?' He leant forward. 'Just listen in to the couple behind you. From what I've heard they're straight out of "Nigger Heaven".'”

   “The first-timer just doesn't know what's going on when he gets to jail. […] It's a jungle, you've got to look after yourself first.”

   “But of course, that excludes the narcissistic delusionals, the deliberate frauds, and the pathological cases of multiple personality. They are all out there in New Age Land, and it's a jungle!”

4. (countable, figuratively, uncountable)A tangled mess.

   “[…] lost in such a jungle of intrigues, pettifoggings, treacheries, diplomacies domestic and foreign […]”

5. (countable, slang, uncountable)An area where hobos camp together.
6. (uncountable)A style of electronic dance music and precursor of drum and bass.

   “Always more multiracial than other post-Rave scenes, Hardcore got “blacker” as hiphop, Ragga, dub and Soul influences kicked in, and by 93 it had evolved into Jungle. By this point, Hardcore/Jungle (the terms remain interchangeable) was universally scorned by dance hipsters and banished from the media.”

   “In large part, happycore was the result of an exodus of white ravers from the jungle scene, in reaction to the influx of black youth and the attendant mood change from bonhomie to surliness.”

7. (countable, slang, uncountable)Dense rough.

   “Hitting from the Jungle. The rough at some courses is just weeds and sparse grass, as often as not giving a player a decent lie to shoot from. But grass above four inches is nasty. It will grab your club and alter your shots.”

8. (countable, slang, uncountable, vulgar)A dense mass of pubic hair.

adj

1. (not-comparable, usually)resembling the fast-paced drumming of traditional peoples of the jungle.

   “She gave her first performance at the Philharmonic Auditorium in Los Angeles, offering festival dances, Moro tribal rituals, primitive jungle rhythms and rice harvest ceremonials.”

   “Somewhere further up the valley a bunch of hippies were getting back to nature by loading up on mind altering chemicals and overwhelming their senses with five million decibels of digital bass and jungle beats.”