"OUN" meaning in English

{
  "head_templates": [
    {
      "args": {},
      "expansion": "OUN",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Organisation of Ukrainian Nationalists"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nationalism",
          "orig": "en:Nationalism",
          "parents": [
            "Ideologies",
            "Politics",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Ukrainian politics",
          "orig": "en:Ukrainian politics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Organisation of Ukrainian Nationalists."
      ],
      "id": "en-OUN-en-name-u9E5wiLI",
      "links": [
        [
          "Organisation of Ukrainian Nationalists",
          "w:Organisation of Ukrainian Nationalists"
        ]
      ],
      "raw_glosses": [
        "(historical) Initialism of Organisation of Ukrainian Nationalists."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "historical",
        "initialism"
      ]
    }
  ],
  "word": "OUN"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "OUN",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Organisation of Ukrainian Nationalists"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English initialisms",
        "English lemmas",
        "English links with redundant alt parameters",
        "English links with redundant wikilinks",
        "English proper nouns",
        "English terms with historical senses",
        "English uncountable nouns",
        "en:Nationalism",
        "en:Ukrainian politics"
      ],
      "glosses": [
        "Initialism of Organisation of Ukrainian Nationalists."
      ],
      "links": [
        [
          "Organisation of Ukrainian Nationalists",
          "w:Organisation of Ukrainian Nationalists"
        ]
      ],
      "raw_glosses": [
        "(historical) Initialism of Organisation of Ukrainian Nationalists."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "historical",
        "initialism"
      ]
    }
  ],
  "word": "OUN"
}