"コス島" meaning in Japanese

{
  "forms": [
    {
      "form": "コス島",
      "ruby": [
        [
          "島",
          "とう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Kosutō",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "proper",
        "2": "コスとう"
      },
      "expansion": "コス島(とう) • (Kosutō)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Kos"
      ],
      "id": "en-コス島-ja-name-hvsCLLnQ",
      "links": [
        [
          "Kos",
          "Kos"
        ]
      ]
    }
  ],
  "word": "コス島"
}

{
  "forms": [
    {
      "form": "コス島",
      "ruby": [
        [
          "島",
          "とう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Kosutō",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "proper",
        "2": "コスとう"
      },
      "expansion": "コス島(とう) • (Kosutō)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese proper nouns",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with one Han script character"
      ],
      "glosses": [
        "Kos"
      ],
      "links": [
        [
          "Kos",
          "Kos"
        ]
      ]
    }
  ],
  "word": "コス島"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "コス島"
  ],
  "section": "Japanese",
  "subsection": "proper noun",
  "title": "コス島",
  "trace": ""
}