A place where something, especially a river or stream, emerges or opens into a larger body of water or wider area; an outlet or mouth.
From French 'débouché,' the noun form of 'déboucher' (to debouch), meaning an opening or outlet. Related to 'bouche' (mouth) and originally used for river mouths.
While 'debouche' is rare in English, the related French term 'débouché' is still used in economics to mean a market outlet—showing how geography vocabulary can transform into business language.
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