"Sjælland" meaning in Danois

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en vieux norrois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en danois issus d’un mot en vieux norrois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms propres en danois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Danois",
      "orig": "danois",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du vieux norrois Siâland. Composé de selr (« phoque ») et de land (« terre »)."
  ],
  "lang": "Danois",
  "lang_code": "da",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Régions du Danemark en danois",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Îles du Danemark en danois",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Seeland."
      ],
      "id": "fr-Sjælland-da-name-Ac5EEjDQ",
      "raw_tags": [
        "Toponyme"
      ],
      "topics": [
        "geography"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ʃelan\\"
    }
  ],
  "word": "Sjælland"
}

{
  "categories": [
    "Compositions en vieux norrois",
    "Mots en danois issus d’un mot en vieux norrois",
    "Noms propres en danois",
    "danois"
  ],
  "etymology_texts": [
    "Du vieux norrois Siâland. Composé de selr (« phoque ») et de land (« terre »)."
  ],
  "lang": "Danois",
  "lang_code": "da",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "categories": [
        "Régions du Danemark en danois",
        "Îles du Danemark en danois"
      ],
      "glosses": [
        "Seeland."
      ],
      "raw_tags": [
        "Toponyme"
      ],
      "topics": [
        "geography"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ʃelan\\"
    }
  ],
  "word": "Sjælland"
}