"eigan" meaning in Icelandic

{
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "noun form"
      },
      "expansion": "eigan",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "36 36 28",
          "kind": "other",
          "name": "Old High German entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "80 11 9",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "84 9 7",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "eiga"
        }
      ],
      "glosses": [
        "definite nominative singular of eiga"
      ],
      "id": "en-eigan-is-noun-xzHTYURW",
      "links": [
        [
          "eiga",
          "eiga#Icelandic"
        ]
      ],
      "tags": [
        "definite",
        "form-of",
        "nominative",
        "singular"
      ]
    }
  ],
  "word": "eigan"
}

{
  "categories": [
    "Old High German adjectives",
    "Old High German entries with incorrect language header",
    "Old High German lemmas",
    "Old High German neuter nouns",
    "Old High German nouns",
    "Old High German terms derived from Proto-Germanic",
    "Old High German terms derived from Proto-West Germanic",
    "Old High German terms inherited from Proto-Germanic",
    "Old High German terms inherited from Proto-West Germanic",
    "Pages with 2 entries",
    "Pages with entries"
  ],
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "noun form"
      },
      "expansion": "eigan",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Icelandic entries with incorrect language header",
        "Icelandic non-lemma forms",
        "Icelandic noun forms",
        "Pages with 2 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "eiga"
        }
      ],
      "glosses": [
        "definite nominative singular of eiga"
      ],
      "links": [
        [
          "eiga",
          "eiga#Icelandic"
        ]
      ],
      "tags": [
        "definite",
        "form-of",
        "nominative",
        "singular"
      ]
    }
  ],
  "word": "eigan"
}