"ec" meaning in Old Norse

{
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "pronoun form"
      },
      "expansion": "ec",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "pron",
  "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 5 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "manuscript spelling of ek"
      ],
      "id": "en-ec-non-pron-kFpQiKU4",
      "links": [
        [
          "ek",
          "ek#Old_Norse"
        ]
      ]
    }
  ],
  "word": "ec"
}

{
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "pronoun form"
      },
      "expansion": "ec",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Old Norse entries with incorrect language header",
        "Old Norse non-lemma forms",
        "Old Norse pronoun forms",
        "Pages with 5 entries",
        "Pages with entries"
      ],
      "glosses": [
        "manuscript spelling of ek"
      ],
      "links": [
        [
          "ek",
          "ek#Old_Norse"
        ]
      ]
    }
  ],
  "word": "ec"
}