means A dense, wild expanse of tangled tropical vegetation teeming with plant and animal life — or, by extension, any chaotic, fiercely competitive environment.

from From Hindi and Urdu 'jangal,' meaning wasteland, uncultivated ground, or forest, which traces back to Sanskrit 'jangala' — curiously, originally describing dry, arid, sparsely wooded land rather than the lush green chaos we now picture. English picked it up during the days of British rule in India, and the word drifted toward 'wet and overgrown,' likely shaped by the actual rainforests colonial travelers encountered.