"руському" meaning in Ukrainian

{
  "forms": [
    {
      "form": "ру́ському",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "rúsʹkomu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "uk",
        "2": "adjective form",
        "head": "ру́ському"
      },
      "expansion": "ру́ському • (rúsʹkomu)",
      "name": "head"
    }
  ],
  "lang": "Ukrainian",
  "lang_code": "uk",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ukrainian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "rúsʹkyj",
          "word": "ру́ський"
        }
      ],
      "glosses": [
        "dative/locative masculine/neuter singular of ру́ський (rúsʹkyj)"
      ],
      "id": "en-руському-uk-adj-mNLoBuNS",
      "links": [
        [
          "ру́ський",
          "руський#Ukrainian"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "locative",
        "masculine",
        "neuter",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈrusʲkɔmʊ]"
    }
  ],
  "word": "руському"
}

{
  "forms": [
    {
      "form": "ру́ському",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "rúsʹkomu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "uk",
        "2": "adjective form",
        "head": "ру́ському"
      },
      "expansion": "ру́ському • (rúsʹkomu)",
      "name": "head"
    }
  ],
  "lang": "Ukrainian",
  "lang_code": "uk",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Ukrainian adjective forms",
        "Ukrainian entries with incorrect language header",
        "Ukrainian non-lemma forms",
        "Ukrainian terms with IPA pronunciation"
      ],
      "form_of": [
        {
          "extra": "rúsʹkyj",
          "word": "ру́ський"
        }
      ],
      "glosses": [
        "dative/locative masculine/neuter singular of ру́ський (rúsʹkyj)"
      ],
      "links": [
        [
          "ру́ський",
          "руський#Ukrainian"
        ]
      ],
      "tags": [
        "dative",
        "form-of",
        "locative",
        "masculine",
        "neuter",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈrusʲkɔmʊ]"
    }
  ],
  "word": "руському"
}