"maternal grandchild" meaning in English

{
  "antonyms": [
    {
      "word": "maternal grandmother"
    },
    {
      "word": "maternal grandfather"
    }
  ],
  "forms": [
    {
      "form": "maternal grandchildren",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "maternal grandchildren"
      },
      "expansion": "maternal grandchild (plural maternal grandchildren)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Family members",
          "orig": "en:Family members",
          "parents": [
            "Family",
            "People",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "the child of one's daughter: a grandchild to whom one is the maternal grandparent"
      ],
      "id": "en-maternal_grandchild-en-noun-IPTmHT5A",
      "related": [
        {
          "word": "paternal grandchild"
        }
      ]
    }
  ],
  "word": "maternal grandchild"
}

{
  "antonyms": [
    {
      "word": "maternal grandmother"
    },
    {
      "word": "maternal grandfather"
    }
  ],
  "forms": [
    {
      "form": "maternal grandchildren",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "maternal grandchildren"
      },
      "expansion": "maternal grandchild (plural maternal grandchildren)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "paternal grandchild"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Family members"
      ],
      "glosses": [
        "the child of one's daughter: a grandchild to whom one is the maternal grandparent"
      ]
    }
  ],
  "word": "maternal grandchild"
}