"UD" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "UD (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "undead"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Fantasy",
          "orig": "en:Fantasy",
          "parents": [
            "Fiction",
            "Speculative fiction",
            "Artistic works",
            "Genres",
            "Art",
            "Entertainment",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Role-playing games",
          "orig": "en:Role-playing games",
          "parents": [
            "Games",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2005, Mr Stephen Feeney, “What server are you on?”, in alt.games.warcraft (Usenet):",
          "text": "Just wondering what server everybody plays on? I have a 60 human warrior on Blackrock and 60 UD priest on Shadowmoon.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Abbreviation of undead."
      ],
      "id": "en-UD-en-adj-W1~jnEgg",
      "links": [
        [
          "fantasy",
          "fantasy"
        ],
        [
          "roleplaying game",
          "roleplaying game"
        ],
        [
          "undead",
          "undead#English"
        ]
      ],
      "qualifier": "fantasy roleplaying games",
      "raw_glosses": [
        "(fantasy roleplaying games) Abbreviation of undead."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "not-comparable"
      ]
    }
  ],
  "word": "UD"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "UD (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "undead"
        }
      ],
      "categories": [
        "English abbreviations",
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Pages with 3 entries",
        "Pages with entries",
        "en:Fantasy",
        "en:Role-playing games"
      ],
      "examples": [
        {
          "ref": "2005, Mr Stephen Feeney, “What server are you on?”, in alt.games.warcraft (Usenet):",
          "text": "Just wondering what server everybody plays on? I have a 60 human warrior on Blackrock and 60 UD priest on Shadowmoon.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Abbreviation of undead."
      ],
      "links": [
        [
          "fantasy",
          "fantasy"
        ],
        [
          "roleplaying game",
          "roleplaying game"
        ],
        [
          "undead",
          "undead#English"
        ]
      ],
      "qualifier": "fantasy roleplaying games",
      "raw_glosses": [
        "(fantasy roleplaying games) Abbreviation of undead."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "not-comparable"
      ]
    }
  ],
  "word": "UD"
}