"Bifurr" meaning in Vieux norrois

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en vieux norrois issus d’un mot en indo-européen commun",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en vieux norrois issus d’un mot en proto-germanique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms propres en vieux norrois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vieux norrois",
      "orig": "vieux norrois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en vieux norrois incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du proto-germanique *bebruz (« castor »), lui-même issu de l’indo-européen commun *bʰébʰrus (« castor »)."
  ],
  "lang": "Vieux norrois",
  "lang_code": "non",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Créatures mythologiques en vieux norrois",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Nom d’un nain."
      ],
      "id": "fr-Bifurr-non-name-~xhOrN4n",
      "topics": [
        "mythology"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "Bifurr"
}

{
  "categories": [
    "Mots en vieux norrois issus d’un mot en indo-européen commun",
    "Mots en vieux norrois issus d’un mot en proto-germanique",
    "Noms propres en vieux norrois",
    "vieux norrois",
    "Étymologies en vieux norrois incluant une reconstruction"
  ],
  "etymology_texts": [
    "Du proto-germanique *bebruz (« castor »), lui-même issu de l’indo-européen commun *bʰébʰrus (« castor »)."
  ],
  "lang": "Vieux norrois",
  "lang_code": "non",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        "Créatures mythologiques en vieux norrois"
      ],
      "glosses": [
        "Nom d’un nain."
      ],
      "topics": [
        "mythology"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "Bifurr"
}