"русь" meaning in Russian

{
  "forms": [
    {
      "form": "rusʹ",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "руси́",
      "tags": [
        "genitive"
      ]
    },
    {
      "form": "no-table-tags",
      "source": "declension",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "ru-noun-table",
      "source": "declension",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "accent-fʺ",
      "source": "declension",
      "tags": [
        "class"
      ]
    },
    {
      "form": "ру́сь",
      "roman": "rúsʹ",
      "source": "declension",
      "tags": [
        "nominative",
        "singular"
      ]
    },
    {
      "form": "руси́",
      "roman": "rusí",
      "source": "declension",
      "tags": [
        "genitive",
        "singular"
      ]
    },
    {
      "form": "руси́",
      "roman": "rusí",
      "source": "declension",
      "tags": [
        "dative",
        "singular"
      ]
    },
    {
      "form": "ру́сь",
      "roman": "rúsʹ",
      "source": "declension",
      "tags": [
        "accusative",
        "singular"
      ]
    },
    {
      "form": "ру́сью",
      "roman": "rúsʹju",
      "source": "declension",
      "tags": [
        "instrumental",
        "singular"
      ]
    },
    {
      "form": "руси́",
      "roman": "rusí",
      "source": "declension",
      "tags": [
        "prepositional",
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "",
        "3": "f",
        "n": "sg"
      },
      "expansion": "русь • (rusʹ) f inan (genitive руси́, uncountable)",
      "name": "ru-noun+"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian nouns with accent pattern fʺ",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Rus (people of Kievan Rus)"
      ],
      "id": "en-русь-ru-noun-iaAgmR~X",
      "links": [
        [
          "Rus",
          "Rus"
        ]
      ],
      "raw_glosses": [
        "(historical, collective) Rus (people of Kievan Rus)"
      ],
      "tags": [
        "collective",
        "historical",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[rusʲ]"
    }
  ],
  "word": "русь"
}

{
  "forms": [
    {
      "form": "rusʹ",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "руси́",
      "tags": [
        "genitive"
      ]
    },
    {
      "form": "no-table-tags",
      "source": "declension",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "ru-noun-table",
      "source": "declension",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "accent-fʺ",
      "source": "declension",
      "tags": [
        "class"
      ]
    },
    {
      "form": "ру́сь",
      "roman": "rúsʹ",
      "source": "declension",
      "tags": [
        "nominative",
        "singular"
      ]
    },
    {
      "form": "руси́",
      "roman": "rusí",
      "source": "declension",
      "tags": [
        "genitive",
        "singular"
      ]
    },
    {
      "form": "руси́",
      "roman": "rusí",
      "source": "declension",
      "tags": [
        "dative",
        "singular"
      ]
    },
    {
      "form": "ру́сь",
      "roman": "rúsʹ",
      "source": "declension",
      "tags": [
        "accusative",
        "singular"
      ]
    },
    {
      "form": "ру́сью",
      "roman": "rúsʹju",
      "source": "declension",
      "tags": [
        "instrumental",
        "singular"
      ]
    },
    {
      "form": "руси́",
      "roman": "rusí",
      "source": "declension",
      "tags": [
        "prepositional",
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "",
        "3": "f",
        "n": "sg"
      },
      "expansion": "русь • (rusʹ) f inan (genitive руси́, uncountable)",
      "name": "ru-noun+"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Russian 1-syllable words",
        "Russian 3rd-declension feminine-form accent-fʺ nouns",
        "Russian 3rd-declension feminine-form nouns",
        "Russian collective nouns",
        "Russian entries with incorrect language header",
        "Russian feminine nouns",
        "Russian inanimate nouns",
        "Russian lemmas",
        "Russian links with redundant wikilinks",
        "Russian nouns",
        "Russian nouns with accent pattern fʺ",
        "Russian terms with IPA pronunciation",
        "Russian terms with historical senses",
        "Russian terms with redundant head parameter",
        "Russian uncountable nouns"
      ],
      "glosses": [
        "Rus (people of Kievan Rus)"
      ],
      "links": [
        [
          "Rus",
          "Rus"
        ]
      ],
      "raw_glosses": [
        "(historical, collective) Rus (people of Kievan Rus)"
      ],
      "tags": [
        "collective",
        "historical",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[rusʲ]"
    }
  ],
  "word": "русь"
}