"roaring forties" meaning in English

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  "lang_code": "en",
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          "ref": "1998, Derek Lundy, chapter 1, in Godforsaken Sea: Racing the World's Most Dangerous Waters, page 5:",
          "text": "Its official demarcation is forty degrees south latitude. It includes the latitudes sailors long-ago nicknamed the roaring forties, the furious fifties, and the screaming sixties. It's an area of almost constant high wind and frequent gales, often exceeding hurricane strength.",
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        "The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds."
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        "(geography, meteorology) The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds."
      ],
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        {
          "word": "furious fifties"
        },
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          "word": "screaming sixties"
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        "climatology",
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      "translations": [
        {
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          "sense": "area of the earth between 40 and 50 degrees south",
          "word": "quarantièmes rugissants"
        }
      ],
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        "Roaring Forties"
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  "word": "roaring forties"
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      "word": "furious fifties"
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      "word": "screaming sixties"
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        "The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds."
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        "(geography, meteorology) The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds."
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      "sense": "area of the earth between 40 and 50 degrees south",
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  "word": "roaring forties"
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