"Sub-Carpathian Rus" meaning in English

{
  "forms": [
    {
      "form": "Subcarpathian Rus′",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Sub-Carpathian Rus",
      "name": "en-proper noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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        {
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          "name": "Geographic and cultural areas of Europe",
          "orig": "en:Geographic and cultural areas of Europe",
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          "source": "w"
        }
      ],
      "glosses": [
        "A historic region of Eastern Europe."
      ],
      "id": "en-Sub-Carpathian_Rus-en-name-FUBOwVY7",
      "links": [
        [
          "Eastern Europe",
          "Eastern Europe#English"
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      ],
      "synonyms": [
        {
          "word": "Carpathian Ruthenia"
        },
        {
          "word": "Transcarpathian Ruthenia"
        },
        {
          "word": "Transcarpathian Ukraine"
        },
        {
          "word": "Transcarpathia"
        },
        {
          "word": "Rusinko"
        },
        {
          "word": "Hungarian Ruthenia"
        },
        {
          "word": "Subcarpathia"
        }
      ],
      "wikipedia": [
        "Sub-Carpathian Rus"
      ]
    }
  ],
  "word": "Sub-Carpathian Rus"
}

{
  "forms": [
    {
      "form": "Subcarpathian Rus′",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Sub-Carpathian Rus",
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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        "A historic region of Eastern Europe."
      ],
      "links": [
        [
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      ],
      "wikipedia": [
        "Sub-Carpathian Rus"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Carpathian Ruthenia"
    },
    {
      "word": "Transcarpathian Ruthenia"
    },
    {
      "word": "Transcarpathian Ukraine"
    },
    {
      "word": "Transcarpathia"
    },
    {
      "word": "Rusinko"
    },
    {
      "word": "Hungarian Ruthenia"
    },
    {
      "word": "Subcarpathia"
    }
  ],
  "word": "Sub-Carpathian Rus"
}