"francés antiguo" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
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      "expansion": "francés antiguo m (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
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        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "langcode": "es",
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          "source": "w"
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      ],
      "glosses": [
        "Old French (language)"
      ],
      "id": "en-francés_antiguo-es-noun-sb7DASC0",
      "links": [
        [
          "Old French",
          "Old French"
        ]
      ],
      "related": [
        {
          "word": "francés medio"
        }
      ],
      "tags": [
        "masculine",
        "uncountable"
      ],
      "wikipedia": [
        "es:francés antiguo"
      ]
    }
  ],
  "word": "francés antiguo"
}

{
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "francés antiguo m (uncountable)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "related": [
    {
      "word": "francés medio"
    }
  ],
  "senses": [
    {
      "categories": [
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        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish multiword terms",
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        "es:Extinct languages"
      ],
      "glosses": [
        "Old French (language)"
      ],
      "links": [
        [
          "Old French",
          "Old French"
        ]
      ],
      "tags": [
        "masculine",
        "uncountable"
      ],
      "wikipedia": [
        "es:francés antiguo"
      ]
    }
  ],
  "word": "francés antiguo"
}