"fauk" meaning in Icelandic

{
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "verb form"
      },
      "expansion": "fauk",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "70 30",
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "29 10 18 17 18 8",
          "kind": "other",
          "name": "Old Norse entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "14 5 33 33 11 4",
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "inflection of fjúka:",
        "first-person singular past indicative"
      ],
      "id": "en-fauk-is-verb-NTLeMNM8",
      "links": [
        [
          "fjúka",
          "fjúka#Icelandic"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "indicative",
        "past",
        "singular"
      ]
    },
    {
      "glosses": [
        "inflection of fjúka:",
        "third-person singular past indicative"
      ],
      "id": "en-fauk-is-verb-PHHnMWM3",
      "links": [
        [
          "fjúka",
          "fjúka#Icelandic"
        ]
      ],
      "tags": [
        "form-of",
        "indicative",
        "past",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "fauk"
}

{
  "categories": [
    "Icelandic entries with incorrect language header",
    "Icelandic non-lemma forms",
    "Icelandic verb forms",
    "Old Norse entries with incorrect language header",
    "Old Norse non-lemma forms",
    "Old Norse verb forms",
    "Pages with 4 entries"
  ],
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "verb form"
      },
      "expansion": "fauk",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "inflection of fjúka:",
        "first-person singular past indicative"
      ],
      "links": [
        [
          "fjúka",
          "fjúka#Icelandic"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "indicative",
        "past",
        "singular"
      ]
    },
    {
      "glosses": [
        "inflection of fjúka:",
        "third-person singular past indicative"
      ],
      "links": [
        [
          "fjúka",
          "fjúka#Icelandic"
        ]
      ],
      "tags": [
        "form-of",
        "indicative",
        "past",
        "singular",
        "third-person"
      ]
    }
  ],
  "word": "fauk"
}