"russer" meaning in Norwegian Bokmål

{
  "forms": [
    {
      "form": "russeren",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "russere",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "russerne",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "nb",
          "name": "Nationalities",
          "orig": "nb:Nationalities",
          "parents": [
            "Demonyms",
            "People",
            "Names",
            "Human",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a Russian (person from Russia)"
      ],
      "id": "en-russer-nb-noun-5wY4YQre",
      "links": [
        [
          "Russian",
          "Russian#English"
        ],
        [
          "Russia",
          "Russia"
        ]
      ],
      "related": [
        {
          "word": "Russland"
        },
        {
          "word": "russisk"
        }
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "russer"
}

{
  "forms": [
    {
      "form": "russeren",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "russere",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "russerne",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "related": [
    {
      "word": "Russland"
    },
    {
      "word": "russisk"
    }
  ],
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål entries with incorrect language header",
        "Norwegian Bokmål entries with topic categories using raw markup",
        "Norwegian Bokmål lemmas",
        "Norwegian Bokmål masculine nouns",
        "Norwegian Bokmål nouns",
        "nb:Nationalities"
      ],
      "glosses": [
        "a Russian (person from Russia)"
      ],
      "links": [
        [
          "Russian",
          "Russian#English"
        ],
        [
          "Russia",
          "Russia"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "russer"
}