"rak" meaning in Old Norse

{
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "verb form"
      },
      "expansion": "rak",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Norse entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "reka"
        }
      ],
      "glosses": [
        "first/third-person singular past active indicative of reka"
      ],
      "id": "en-rak-non-verb-Yeaw~lK1",
      "links": [
        [
          "reka",
          "reka#Old Norse"
        ]
      ],
      "tags": [
        "active",
        "first-person",
        "form-of",
        "indicative",
        "past",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "rak"
}

{
  "categories": [
    "Upper Sorbian animal nouns",
    "Upper Sorbian entries with incorrect language header",
    "Upper Sorbian lemmas",
    "Upper Sorbian masculine nouns",
    "Upper Sorbian nouns",
    "Upper Sorbian terms derived from Proto-Slavic",
    "Upper Sorbian terms inherited from Proto-Slavic",
    "hsb:Arthropods",
    "hsb:Medicine"
  ],
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "verb form"
      },
      "expansion": "rak",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Old Norse entries with incorrect language header",
        "Old Norse non-lemma forms",
        "Old Norse verb forms"
      ],
      "form_of": [
        {
          "word": "reka"
        }
      ],
      "glosses": [
        "first/third-person singular past active indicative of reka"
      ],
      "links": [
        [
          "reka",
          "reka#Old Norse"
        ]
      ],
      "tags": [
        "active",
        "first-person",
        "form-of",
        "indicative",
        "past",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "rak"
}