"xxx" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "xxx (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with 3 consecutive instances of the same letter",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1952, “Two Chips and a Miss”, in Chip 'n' Dale:",
          "text": "[written on a letter]\nDear Chip —\nSee you tonight.\nLove\nxxxx\nClarice",
          "type": "quote"
        }
      ],
      "glosses": [
        "An abbreviation for kisses, usually placed at the end of a letter or text message, often alongside ooo (hugs)."
      ],
      "id": "en-xxx-en-noun-lMiFA6Ay",
      "links": [
        [
          "kisses",
          "kisses#English"
        ],
        [
          "text message",
          "text message#English"
        ],
        [
          "ooo",
          "ooo#English"
        ]
      ],
      "related": [
        {
          "word": "xoxo"
        }
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "xxx"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "xxx (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "xoxo"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with 3 consecutive instances of the same letter",
        "English terms with quotations",
        "English uncountable nouns",
        "English words without vowels",
        "Pages with 2 entries",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1952, “Two Chips and a Miss”, in Chip 'n' Dale:",
          "text": "[written on a letter]\nDear Chip —\nSee you tonight.\nLove\nxxxx\nClarice",
          "type": "quote"
        }
      ],
      "glosses": [
        "An abbreviation for kisses, usually placed at the end of a letter or text message, often alongside ooo (hugs)."
      ],
      "links": [
        [
          "kisses",
          "kisses#English"
        ],
        [
          "text message",
          "text message#English"
        ],
        [
          "ooo",
          "ooo#English"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "xxx"
}