"SKL" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "SKL (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Sumerian King List"
        }
      ],
      "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": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of Sumerian King List."
      ],
      "id": "en-SKL-en-noun-P~ueyipt",
      "links": [
        [
          "Sumerian King List",
          "w:Sumerian King List"
        ]
      ],
      "raw_glosses": [
        "(historical) Initialism of Sumerian King List."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "historical",
        "initialism",
        "uncountable"
      ]
    }
  ],
  "word": "SKL"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "SKL (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Sumerian King List"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English initialisms",
        "English lemmas",
        "English links with redundant alt parameters",
        "English links with redundant wikilinks",
        "English nouns",
        "English terms with historical senses",
        "English uncountable nouns",
        "English words without vowels",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Initialism of Sumerian King List."
      ],
      "links": [
        [
          "Sumerian King List",
          "w:Sumerian King List"
        ]
      ],
      "raw_glosses": [
        "(historical) Initialism of Sumerian King List."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "historical",
        "initialism",
        "uncountable"
      ]
    }
  ],
  "word": "SKL"
}