"æææ" meaning in Icelandic

{
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "interjection"
      },
      "expansion": "æææ",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Icelandic terms with 3 consecutive instances of the same letter",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "elongated form of æ (interjection)"
      ],
      "id": "en-æææ-is-intj-H4T5Ih10",
      "links": [
        [
          "æ",
          "æ#Icelandic"
        ]
      ]
    }
  ],
  "word": "æææ"
}

{
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "interjection"
      },
      "expansion": "æææ",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Icelandic elongated forms",
        "Icelandic entries with incorrect language header",
        "Icelandic interjections",
        "Icelandic lemmas",
        "Icelandic terms with 3 consecutive instances of the same letter",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "elongated form of æ (interjection)"
      ],
      "links": [
        [
          "æ",
          "æ#Icelandic"
        ]
      ]
    }
  ],
  "word": "æææ"
}