"roaring forties" meaning in English

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      "expansion": "roaring forties pl (plural only)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "other",
          "name": "English entries with incorrect language header",
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      "examples": [
        {
          "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.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds."
      ],
      "id": "en-roaring_forties-en-noun-HRfHDhIM",
      "links": [
        [
          "geography",
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          "meteorology",
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      ],
      "raw_glosses": [
        "(geography, meteorology) The area of the earth between 40 and 50 degrees south, prone to gale-force westerly winds."
      ],
      "related": [
        {
          "word": "furious fifties"
        },
        {
          "word": "screaming sixties"
        }
      ],
      "tags": [
        "plural",
        "plural-only"
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      "topics": [
        "climatology",
        "geography",
        "meteorology",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "area of the earth between 40 and 50 degrees south",
          "word": "quarantièmes rugissants"
        }
      ],
      "wikipedia": [
        "Roaring Forties"
      ]
    }
  ],
  "word": "roaring forties"
}

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      "expansion": "roaring forties pl (plural only)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "furious fifties"
    },
    {
      "word": "screaming sixties"
    }
  ],
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      "examples": [
        {
          "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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      ],
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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",
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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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        "plural",
        "plural-only"
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      "topics": [
        "climatology",
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      "wikipedia": [
        "Roaring Forties"
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  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "area of the earth between 40 and 50 degrees south",
      "word": "quarantièmes rugissants"
    }
  ],
  "word": "roaring forties"
}