"прабака" meaning in Serbo-Croatian

{
  "forms": [
    {
      "form": "праба́ка",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "prabáka",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "f",
        "head": "праба́ка"
      },
      "expansion": "праба́ка f (Latin spelling prabáka)",
      "name": "sh-noun"
    }
  ],
  "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": "topical",
          "langcode": "sh",
          "name": "Female family members",
          "orig": "sh:Female family members",
          "parents": [
            "Family members",
            "Female people",
            "Family",
            "Female",
            "People",
            "Gender",
            "Human",
            "Biology",
            "Psychology",
            "Sociology",
            "All topics",
            "Sciences",
            "Social sciences",
            "Fundamental",
            "Society"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "great-grandmother"
      ],
      "id": "en-прабака-sh-noun-Ajhk2Fz6",
      "links": [
        [
          "great-grandmother",
          "great-grandmother"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/prabǎːka/"
    }
  ],
  "word": "прабака"
}

{
  "forms": [
    {
      "form": "праба́ка",
      "tags": [
        "canonical",
        "feminine"
      ]
    },
    {
      "form": "prabáka",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "g": "f",
        "head": "праба́ка"
      },
      "expansion": "праба́ка f (Latin spelling prabáka)",
      "name": "sh-noun"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Serbo-Croatian entries with incorrect language header",
        "Serbo-Croatian feminine nouns",
        "Serbo-Croatian lemmas",
        "Serbo-Croatian nouns",
        "Serbo-Croatian terms with IPA pronunciation",
        "sh:Female family members"
      ],
      "glosses": [
        "great-grandmother"
      ],
      "links": [
        [
          "great-grandmother",
          "great-grandmother"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/prabǎːka/"
    }
  ],
  "word": "прабака"
}