"sei" meaning in Norwegian Bokmål

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "da",
            "2": "sej"
          },
          "expansion": "Danish: sej",
          "name": "desc"
        }
      ],
      "text": "Danish: sej"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "seiðr"
      },
      "expansion": "Old Norse seiðr",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Norse seiðr.",
  "forms": [
    {
      "form": "seien",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "seier",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "seiene",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Norwegian Bokmål entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "nb",
          "name": "Fish",
          "orig": "nb:Fish",
          "parents": [
            "Vertebrates",
            "Chordates",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "pollock (Pollachius virens)"
      ],
      "id": "en-sei-nb-noun-vmzJgvG6",
      "links": [
        [
          "pollock",
          "pollock#English"
        ],
        [
          "Pollachius virens",
          "Pollachius virens#Translingual"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sæj/"
    },
    {
      "rhymes": "-æj"
    }
  ],
  "word": "sei"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "da",
            "2": "sej"
          },
          "expansion": "Danish: sej",
          "name": "desc"
        }
      ],
      "text": "Danish: sej"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "seiðr"
      },
      "expansion": "Old Norse seiðr",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Norse seiðr.",
  "forms": [
    {
      "form": "seien",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "seier",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "seiene",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Norwegian Bokmål entries with incorrect language header",
        "Norwegian Bokmål lemmas",
        "Norwegian Bokmål masculine nouns",
        "Norwegian Bokmål nouns",
        "Norwegian Bokmål terms derived from Old Norse",
        "Norwegian Bokmål terms with IPA pronunciation",
        "Rhymes:Norwegian Bokmål/æj",
        "nb:Fish"
      ],
      "glosses": [
        "pollock (Pollachius virens)"
      ],
      "links": [
        [
          "pollock",
          "pollock#English"
        ],
        [
          "Pollachius virens",
          "Pollachius virens#Translingual"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sæj/"
    },
    {
      "rhymes": "-æj"
    }
  ],
  "word": "sei"
}