"sein" meaning in Old Swedish

{
  "head_templates": [
    {
      "args": {
        "1": "gmq-osw",
        "2": "verb form"
      },
      "expansion": "sein",
      "name": "head"
    }
  ],
  "lang": "Old Swedish",
  "lang_code": "gmq-osw",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 19 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "vara"
        }
      ],
      "glosses": [
        "first-person plural present subjunctive of vara"
      ],
      "id": "en-sein-gmq-osw-verb-4I--C21Q",
      "links": [
        [
          "vara",
          "vara#Old_Swedish"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "plural",
        "present",
        "subjunctive"
      ]
    }
  ],
  "word": "sein"
}

{
  "head_templates": [
    {
      "args": {
        "1": "gmq-osw",
        "2": "verb form"
      },
      "expansion": "sein",
      "name": "head"
    }
  ],
  "lang": "Old Swedish",
  "lang_code": "gmq-osw",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Old Swedish entries with incorrect language header",
        "Old Swedish non-lemma forms",
        "Old Swedish verb forms",
        "Pages with 19 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "vara"
        }
      ],
      "glosses": [
        "first-person plural present subjunctive of vara"
      ],
      "links": [
        [
          "vara",
          "vara#Old_Swedish"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "plural",
        "present",
        "subjunctive"
      ]
    }
  ],
  "word": "sein"
}