"great-grandniece" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "great",
        "3": "grandniece"
      },
      "expansion": "great- + grandniece",
      "name": "prefix"
    }
  ],
  "etymology_text": "From great- + grandniece.",
  "forms": [
    {
      "form": "great-grandnieces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "great-grandniece"
      },
      "expansion": "great-grandniece (plural great-grandnieces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with great-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Female family members",
          "orig": "en: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": [
        "A great-granddaughter of one's sibling, a granddaughter of one's nephew or niece. (Brother's great-granddaughter: fraternal great-grandniece. Sister's great-granddaughter: sororal great-grandniece)"
      ],
      "id": "en-great-grandniece-en-noun-4Eg0AJPT",
      "links": [
        [
          "great-granddaughter",
          "great-granddaughter"
        ],
        [
          "sibling",
          "sibling"
        ],
        [
          "granddaughter",
          "granddaughter"
        ],
        [
          "nephew",
          "nephew"
        ],
        [
          "niece",
          "niece"
        ]
      ],
      "synonyms": [
        {
          "word": "great-great-niece"
        }
      ]
    }
  ],
  "word": "great-grandniece"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "great",
        "3": "grandniece"
      },
      "expansion": "great- + grandniece",
      "name": "prefix"
    }
  ],
  "etymology_text": "From great- + grandniece.",
  "forms": [
    {
      "form": "great-grandnieces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "great-grandniece"
      },
      "expansion": "great-grandniece (plural great-grandnieces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms prefixed with great-",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Female family members"
      ],
      "glosses": [
        "A great-granddaughter of one's sibling, a granddaughter of one's nephew or niece. (Brother's great-granddaughter: fraternal great-grandniece. Sister's great-granddaughter: sororal great-grandniece)"
      ],
      "links": [
        [
          "great-granddaughter",
          "great-granddaughter"
        ],
        [
          "sibling",
          "sibling"
        ],
        [
          "granddaughter",
          "granddaughter"
        ],
        [
          "nephew",
          "nephew"
        ],
        [
          "niece",
          "niece"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "great-great-niece"
    }
  ],
  "word": "great-grandniece"
}