"langue sœur" meaning in All languages combined

{
  "forms": [
    {
      "form": "langues sœurs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "langue sœur f (plural langues sœurs)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Linguistics",
          "orig": "fr:Linguistics",
          "parents": [
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "sister language"
      ],
      "id": "en-langue_sœur-fr-noun-W0fzmpMX",
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "sister language",
          "sister language"
        ]
      ],
      "raw_glosses": [
        "(linguistics) sister language"
      ],
      "synonyms": [
        {
          "word": "langue-sœur"
        }
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/lɑ̃ɡ sœʁ/"
    }
  ],
  "word": "langue sœur"
}

{
  "forms": [
    {
      "form": "langues sœurs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "langue sœur f (plural langues sœurs)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French feminine nouns",
        "French lemmas",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms with IPA pronunciation",
        "fr:Linguistics"
      ],
      "glosses": [
        "sister language"
      ],
      "links": [
        [
          "linguistics",
          "linguistics"
        ],
        [
          "sister language",
          "sister language"
        ]
      ],
      "raw_glosses": [
        "(linguistics) sister language"
      ],
      "tags": [
        "feminine"
      ],
      "topics": [
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/lɑ̃ɡ sœʁ/"
    }
  ],
  "synonyms": [
    {
      "word": "langue-sœur"
    }
  ],
  "word": "langue sœur"
}