"furious fifties" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "furious fifties pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Fifty",
          "orig": "en:Fifty",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sailing",
          "orig": "en:Sailing",
          "parents": [
            "Nautical",
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "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 50 and 60 degrees south, prone to strong winds."
      ],
      "id": "en-furious_fifties-en-noun-LkfGBMcg",
      "related": [
        {
          "word": "roaring forties"
        },
        {
          "word": "screaming sixties"
        }
      ],
      "tags": [
        "plural",
        "plural-only"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "area of the earth between 50 and 60 degrees south",
          "word": "cinquantièmes hurlants"
        },
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "šaleni pʺjatdesjati",
          "sense": "area of the earth between 50 and 60 degrees south",
          "tags": [
            "plural"
          ],
          "word": "шалені п'ятдесяті"
        },
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "nesamovyti pʺjatdesjati",
          "sense": "area of the earth between 50 and 60 degrees south",
          "tags": [
            "plural"
          ],
          "word": "несамовиті п'ятдесяті"
        },
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "buremni pʺjatdesjati",
          "sense": "area of the earth between 50 and 60 degrees south",
          "tags": [
            "plural"
          ],
          "word": "буремні п'ятдесяті"
        }
      ]
    }
  ],
  "word": "furious fifties"
}

{
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "furious fifties pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "roaring forties"
    },
    {
      "word": "screaming sixties"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "English terms with quotations",
        "en:Fifty",
        "en:Sailing"
      ],
      "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 50 and 60 degrees south, prone to strong winds."
      ],
      "tags": [
        "plural",
        "plural-only"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "area of the earth between 50 and 60 degrees south",
      "word": "cinquantièmes hurlants"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "šaleni pʺjatdesjati",
      "sense": "area of the earth between 50 and 60 degrees south",
      "tags": [
        "plural"
      ],
      "word": "шалені п'ятдесяті"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "nesamovyti pʺjatdesjati",
      "sense": "area of the earth between 50 and 60 degrees south",
      "tags": [
        "plural"
      ],
      "word": "несамовиті п'ятдесяті"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "buremni pʺjatdesjati",
      "sense": "area of the earth between 50 and 60 degrees south",
      "tags": [
        "plural"
      ],
      "word": "буремні п'ятдесяті"
    }
  ],
  "word": "furious fifties"
}