"grandbaby" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grand",
        "3": "baby"
      },
      "expansion": "grand- + baby",
      "name": "prefix"
    }
  ],
  "etymology_text": "grand- + baby. Attested 1850s US.",
  "forms": [
    {
      "form": "grandbabies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grandbaby (plural grandbabies)",
      "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with grand-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Family members",
          "orig": "en:Family members",
          "parents": [
            "Family",
            "People",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A young grandchild."
      ],
      "id": "en-grandbaby-en-noun-QOpUwUcD",
      "links": [
        [
          "grandchild",
          "grandchild"
        ]
      ],
      "raw_glosses": [
        "(informal) A young grandchild."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "grandbaby"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grand",
        "3": "baby"
      },
      "expansion": "grand- + baby",
      "name": "prefix"
    }
  ],
  "etymology_text": "grand- + baby. Attested 1850s US.",
  "forms": [
    {
      "form": "grandbabies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "grandbaby (plural grandbabies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English informal terms",
        "English lemmas",
        "English nouns",
        "English terms prefixed with grand-",
        "en:Family members"
      ],
      "glosses": [
        "A young grandchild."
      ],
      "links": [
        [
          "grandchild",
          "grandchild"
        ]
      ],
      "raw_glosses": [
        "(informal) A young grandchild."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "grandbaby"
}