"књижуљак" meaning in Serbo-Croatian

{
  "forms": [
    {
      "form": "књижу́љак",
      "tags": [
        "canonical",
        "masculine"
      ]
    },
    {
      "form": "knjižúljak",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "m",
        "head": "књижу́љак"
      },
      "expansion": "књижу́љак m (Latin spelling knjižúljak)",
      "name": "sh-noun"
    }
  ],
  "hyphenation": [
    "књи‧жу‧љак"
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Serbo-Croatian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "sh",
          "name": "Books",
          "orig": "sh:Books",
          "parents": [
            "Literature",
            "Mass media",
            "Culture",
            "Entertainment",
            "Writing",
            "Media",
            "Society",
            "Human behaviour",
            "Language",
            "Communication",
            "All topics",
            "Human",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "booklet"
      ],
      "id": "en-књижуљак-sh-noun-Z1MNx66W",
      "links": [
        [
          "booklet",
          "booklet"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kɲiʒǔːʎak/"
    },
    {
      "rhymes": "-ǔːʎak"
    }
  ],
  "word": "књижуљак"
}

{
  "forms": [
    {
      "form": "књижу́љак",
      "tags": [
        "canonical",
        "masculine"
      ]
    },
    {
      "form": "knjižúljak",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "m",
        "head": "књижу́љак"
      },
      "expansion": "књижу́љак m (Latin spelling knjižúljak)",
      "name": "sh-noun"
    }
  ],
  "hyphenation": [
    "књи‧жу‧љак"
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:Serbo-Croatian/ǔːʎak",
        "Rhymes:Serbo-Croatian/ǔːʎak/3 syllables",
        "Serbo-Croatian entries with incorrect language header",
        "Serbo-Croatian lemmas",
        "Serbo-Croatian masculine nouns",
        "Serbo-Croatian nouns",
        "sh:Books"
      ],
      "glosses": [
        "booklet"
      ],
      "links": [
        [
          "booklet",
          "booklet"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kɲiʒǔːʎak/"
    },
    {
      "rhymes": "-ǔːʎak"
    }
  ],
  "word": "књижуљак"
}