"zviždaljku" meaning in Serbo-Croatian

{
  "forms": [
    {
      "form": "звиждаљку",
      "tags": [
        "Cyrillic"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "zviždaljku (Cyrillic spelling звиждаљку)",
      "name": "sh-noun-form"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Serbo-Croatian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "zviždaljka"
        }
      ],
      "glosses": [
        "accusative singular of zviždaljka"
      ],
      "id": "en-zviždaljku-sh-noun-Xejn2UJR",
      "links": [
        [
          "zviždaljka",
          "zviždaljka#Serbo-Croatian"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "singular"
      ]
    }
  ],
  "word": "zviždaljku"
}

{
  "forms": [
    {
      "form": "звиждаљку",
      "tags": [
        "Cyrillic"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "zviždaljku (Cyrillic spelling звиждаљку)",
      "name": "sh-noun-form"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Serbo-Croatian entries with incorrect language header",
        "Serbo-Croatian non-lemma forms",
        "Serbo-Croatian noun forms"
      ],
      "form_of": [
        {
          "word": "zviždaljka"
        }
      ],
      "glosses": [
        "accusative singular of zviždaljka"
      ],
      "links": [
        [
          "zviždaljka",
          "zviždaljka#Serbo-Croatian"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "singular"
      ]
    }
  ],
  "word": "zviždaljku"
}