"Femern" meaning in Danish

{
  "head_templates": [
    {
      "args": {
        "1": "da",
        "2": "proper noun"
      },
      "expansion": "Femern",
      "name": "head"
    }
  ],
  "lang": "Danish",
  "lang_code": "da",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Danish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "da",
          "name": "Islands",
          "orig": "da:Islands",
          "parents": [
            "Places",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Fehmarn (German island in the Baltic Sea)"
      ],
      "id": "en-Femern-da-name-qhuA~Siy",
      "links": [
        [
          "Fehmarn",
          "Fehmarn"
        ]
      ],
      "related": [
        {
          "word": "Femern Bælt"
        }
      ]
    }
  ],
  "word": "Femern"
}

{
  "head_templates": [
    {
      "args": {
        "1": "da",
        "2": "proper noun"
      },
      "expansion": "Femern",
      "name": "head"
    }
  ],
  "lang": "Danish",
  "lang_code": "da",
  "pos": "name",
  "related": [
    {
      "word": "Femern Bælt"
    }
  ],
  "senses": [
    {
      "categories": [
        "Danish entries with incorrect language header",
        "Danish lemmas",
        "Danish proper nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "da:Islands"
      ],
      "glosses": [
        "Fehmarn (German island in the Baltic Sea)"
      ],
      "links": [
        [
          "Fehmarn",
          "Fehmarn"
        ]
      ]
    }
  ],
  "word": "Femern"
}