"cinquantaine" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "cinquante",
        "3": "-aine"
      },
      "expansion": "cinquante + -aine",
      "name": "af"
    }
  ],
  "etymology_text": "From cinquante + -aine.",
  "forms": [
    {
      "form": "cinquantaines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "cinquantaine f (plural cinquantaines)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0",
      "word": "centaine"
    },
    {
      "_dis1": "0 0",
      "word": "dizaine"
    },
    {
      "_dis1": "0 0",
      "word": "douzaine"
    },
    {
      "_dis1": "0 0",
      "word": "huitaine"
    },
    {
      "_dis1": "0 0",
      "word": "quarantaine"
    },
    {
      "_dis1": "0 0",
      "word": "quinzaine"
    },
    {
      "_dis1": "0 0",
      "word": "soixantaine"
    },
    {
      "_dis1": "0 0",
      "word": "trentaine"
    },
    {
      "_dis1": "0 0",
      "word": "vingtaine"
    }
  ],
  "senses": [
    {
      "glosses": [
        "about 50, 50 or so"
      ],
      "id": "en-cinquantaine-fr-noun-4IIsqqds",
      "links": [
        [
          "or so",
          "or so"
        ]
      ],
      "tags": [
        "feminine"
      ]
    },
    {
      "categories": [
        {
          "_dis": "27 73",
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "26 74",
          "kind": "other",
          "name": "French terms suffixed with -aine",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "31 69",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "14 86",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              17,
              29
            ]
          ],
          "bold_translation_offsets": [
            [
              13,
              20
            ]
          ],
          "english": "a man in his fifties",
          "text": "un homme dans la cinquantaine",
          "translation": "a man in his fifties",
          "type": "example"
        }
      ],
      "glosses": [
        "one's fifties (period of life between ages 50 and 59)"
      ],
      "id": "en-cinquantaine-fr-noun-fKDzvddT",
      "links": [
        [
          "fifties",
          "fifties"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sɛ̃.kɑ̃.tɛn/"
    }
  ],
  "word": "cinquantaine"
}

{
  "categories": [
    "French 3-syllable words",
    "French countable nouns",
    "French entries with incorrect language header",
    "French feminine nouns",
    "French lemmas",
    "French nouns",
    "French terms suffixed with -aine",
    "French terms with IPA pronunciation",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "cinquante",
        "3": "-aine"
      },
      "expansion": "cinquante + -aine",
      "name": "af"
    }
  ],
  "etymology_text": "From cinquante + -aine.",
  "forms": [
    {
      "form": "cinquantaines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "cinquantaine f (plural cinquantaines)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "word": "centaine"
    },
    {
      "word": "dizaine"
    },
    {
      "word": "douzaine"
    },
    {
      "word": "huitaine"
    },
    {
      "word": "quarantaine"
    },
    {
      "word": "quinzaine"
    },
    {
      "word": "soixantaine"
    },
    {
      "word": "trentaine"
    },
    {
      "word": "vingtaine"
    }
  ],
  "senses": [
    {
      "glosses": [
        "about 50, 50 or so"
      ],
      "links": [
        [
          "or so",
          "or so"
        ]
      ],
      "tags": [
        "feminine"
      ]
    },
    {
      "categories": [
        "French terms with usage examples"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              17,
              29
            ]
          ],
          "bold_translation_offsets": [
            [
              13,
              20
            ]
          ],
          "english": "a man in his fifties",
          "text": "un homme dans la cinquantaine",
          "translation": "a man in his fifties",
          "type": "example"
        }
      ],
      "glosses": [
        "one's fifties (period of life between ages 50 and 59)"
      ],
      "links": [
        [
          "fifties",
          "fifties"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sɛ̃.kɑ̃.tɛn/"
    }
  ],
  "word": "cinquantaine"
}