"koeltoer" meaning in Dutch

{
  "forms": [
    {
      "form": "koeltoeren",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "koeltoertje",
      "tags": [
        "diminutive",
        "neuter"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "-en",
        "3": "koeltoertje"
      },
      "expansion": "koeltoer f (plural koeltoeren, diminutive koeltoertje n)",
      "name": "nl-noun"
    }
  ],
  "lang": "Dutch",
  "lang_code": "nl",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "culture",
          "word": "cultuur"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Dutch entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Dutch eye dialect",
          "parents": [
            "Eye dialect",
            "Nonstandard forms",
            "Terms by orthographic property",
            "Nonstandard terms",
            "Terms by lexical property",
            "Terms by usage"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Eye dialect spelling of cultuur (“culture”)."
      ],
      "id": "en-koeltoer-nl-noun-V~5rFlXf",
      "links": [
        [
          "cultuur",
          "cultuur#Dutch"
        ]
      ],
      "tags": [
        "alt-of",
        "feminine",
        "pronunciation-spelling"
      ]
    }
  ],
  "word": "koeltoer"
}

{
  "forms": [
    {
      "form": "koeltoeren",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "koeltoertje",
      "tags": [
        "diminutive",
        "neuter"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "-en",
        "3": "koeltoertje"
      },
      "expansion": "koeltoer f (plural koeltoeren, diminutive koeltoertje n)",
      "name": "nl-noun"
    }
  ],
  "lang": "Dutch",
  "lang_code": "nl",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "culture",
          "word": "cultuur"
        }
      ],
      "categories": [
        "Dutch entries with incorrect language header",
        "Dutch eye dialect",
        "Dutch feminine nouns",
        "Dutch lemmas",
        "Dutch nouns",
        "Dutch nouns with plural in -en"
      ],
      "glosses": [
        "Eye dialect spelling of cultuur (“culture”)."
      ],
      "links": [
        [
          "cultuur",
          "cultuur#Dutch"
        ]
      ],
      "tags": [
        "alt-of",
        "feminine",
        "pronunciation-spelling"
      ]
    }
  ],
  "word": "koeltoer"
}