"þinga" meaning in Old Norse

{
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "noun form"
      },
      "expansion": "þinga",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Norse entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "28 31 31 3 8",
          "kind": "other",
          "name": "Old Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "32 31 31 3 4",
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "32 31 31 2 3",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "þing"
        }
      ],
      "glosses": [
        "genitive plural of þing"
      ],
      "id": "en-þinga-non-noun-Wee3~bvB",
      "links": [
        [
          "þing",
          "þing#Old_Norse"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "plural"
      ]
    }
  ],
  "word": "þinga"
}

{
  "categories": [
    "Old Swedish entries with incorrect language header",
    "Old Swedish lemmas",
    "Old Swedish terms derived from Old Norse",
    "Old Swedish terms derived from Proto-Germanic",
    "Old Swedish terms inherited from Old Norse",
    "Old Swedish terms inherited from Proto-Germanic",
    "Old Swedish verbs",
    "Old Swedish weak verbs",
    "Pages with 4 entries",
    "Pages with entries"
  ],
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "noun form"
      },
      "expansion": "þinga",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Old Norse entries with incorrect language header",
        "Old Norse non-lemma forms",
        "Old Norse noun forms",
        "Pages with 4 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "þing"
        }
      ],
      "glosses": [
        "genitive plural of þing"
      ],
      "links": [
        [
          "þing",
          "þing#Old_Norse"
        ]
      ],
      "tags": [
        "form-of",
        "genitive",
        "plural"
      ]
    }
  ],
  "word": "þinga"
}