"ЛУ" meaning in Russian

{
  "forms": [
    {
      "form": "LU",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "ЛУ • (LU) m inan (indeclinable)",
      "name": "ru-proper noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Ljubljánskij universitét, “UL”",
          "word": "Любля́нский университе́т"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "initialism of Любля́нский университе́т (Ljubljánskij universitét, “UL”)"
      ],
      "id": "en-ЛУ-ru-name-d8rvW2tf",
      "links": [
        [
          "Любля́нский университе́т",
          "Люблянский университет#Russian"
        ]
      ],
      "synonyms": [
        {
          "word": "Любля́нский университе́т"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˌɛɫˈu]"
    }
  ],
  "word": "ЛУ"
}

{
  "forms": [
    {
      "form": "LU",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "ЛУ • (LU) m inan (indeclinable)",
      "name": "ru-proper noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Ljubljánskij universitét, “UL”",
          "word": "Любля́нский университе́т"
        }
      ],
      "categories": [
        "Russian 2-syllable words",
        "Russian abbreviations",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian initialisms",
        "Russian lemmas",
        "Russian masculine nouns",
        "Russian proper nouns",
        "Russian terms with IPA pronunciation",
        "Russian terms with redundant head parameter"
      ],
      "glosses": [
        "initialism of Любля́нский университе́т (Ljubljánskij universitét, “UL”)"
      ],
      "links": [
        [
          "Любля́нский университе́т",
          "Люблянский университет#Russian"
        ]
      ],
      "synonyms": [
        {
          "word": "Любля́нский университе́т"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˌɛɫˈu]"
    }
  ],
  "word": "ЛУ"
}