"glavolomka" meaning in Serbo-Croatian

{
  "etymology_templates": [
    {
      "args": {
        "1": "sh",
        "2": "glava",
        "3": "lomiti",
        "alt2": "lom-",
        "t1": "head",
        "t2": "to break"
      },
      "expansion": "glava (“head”) + lom- (“to break”)",
      "name": "compound"
    },
    {
      "args": {
        "1": "sh",
        "2": "",
        "3": "ka"
      },
      "expansion": "+ -ka",
      "name": "suffix"
    }
  ],
  "etymology_text": "glava (“head”) + lom- (“to break”) + -ka.",
  "forms": [
    {
      "form": "glavòlomka",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "главо̀ломка",
      "tags": [
        "Cyrillic"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "f",
        "head": "glavòlomka"
      },
      "expansion": "glavòlomka f (Cyrillic spelling главо̀ломка)",
      "name": "sh-noun"
    }
  ],
  "hyphenation": [
    "gla‧vo‧lom‧ka"
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Serbo-Croatian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Serbo-Croatian terms suffixed with -ka",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "a tough nut to crack, a stumper (a difficult puzzle or problem)"
      ],
      "id": "en-glavolomka-sh-noun-qy4tyWqb",
      "links": [
        [
          "tough nut to crack",
          "tough nut to crack"
        ],
        [
          "stumper",
          "stumper"
        ],
        [
          "puzzle",
          "puzzle#English"
        ],
        [
          "problem",
          "problem#English"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɡlaʋǒlomka/"
    }
  ],
  "word": "glavolomka"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "sh",
        "2": "glava",
        "3": "lomiti",
        "alt2": "lom-",
        "t1": "head",
        "t2": "to break"
      },
      "expansion": "glava (“head”) + lom- (“to break”)",
      "name": "compound"
    },
    {
      "args": {
        "1": "sh",
        "2": "",
        "3": "ka"
      },
      "expansion": "+ -ka",
      "name": "suffix"
    }
  ],
  "etymology_text": "glava (“head”) + lom- (“to break”) + -ka.",
  "forms": [
    {
      "form": "glavòlomka",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "главо̀ломка",
      "tags": [
        "Cyrillic"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "f",
        "head": "glavòlomka"
      },
      "expansion": "glavòlomka f (Cyrillic spelling главо̀ломка)",
      "name": "sh-noun"
    }
  ],
  "hyphenation": [
    "gla‧vo‧lom‧ka"
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Serbo-Croatian compound terms",
        "Serbo-Croatian entries with incorrect language header",
        "Serbo-Croatian feminine nouns",
        "Serbo-Croatian lemmas",
        "Serbo-Croatian nouns",
        "Serbo-Croatian terms suffixed with -ka",
        "Serbo-Croatian terms with IPA pronunciation"
      ],
      "glosses": [
        "a tough nut to crack, a stumper (a difficult puzzle or problem)"
      ],
      "links": [
        [
          "tough nut to crack",
          "tough nut to crack"
        ],
        [
          "stumper",
          "stumper"
        ],
        [
          "puzzle",
          "puzzle#English"
        ],
        [
          "problem",
          "problem#English"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɡlaʋǒlomka/"
    }
  ],
  "word": "glavolomka"
}