"isiZulu" meaning in Xhosa

{
  "forms": [
    {
      "form": "ísíZulu",
      "tags": [
        "canonical",
        "class-7"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ísíZulu",
        "2": "7",
        "3": "-"
      },
      "expansion": "ísíZulu class 7",
      "name": "xh-noun"
    }
  ],
  "lang": "Xhosa",
  "lang_code": "xh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Xhosa entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Xhosa terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "xh",
          "name": "Languages",
          "orig": "xh:Languages",
          "parents": [
            "Language",
            "Names",
            "Communication",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Zulu language"
      ],
      "id": "en-isiZulu-xh-noun-6yFeY2oU",
      "links": [
        [
          "Zulu",
          "Zulu"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ísíz̥ṳːlu]"
    }
  ],
  "word": "isiZulu"
}

{
  "forms": [
    {
      "form": "ísíZulu",
      "tags": [
        "canonical",
        "class-7"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ísíZulu",
        "2": "7",
        "3": "-"
      },
      "expansion": "ísíZulu class 7",
      "name": "xh-noun"
    }
  ],
  "lang": "Xhosa",
  "lang_code": "xh",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Xhosa class 7 nouns",
        "Xhosa entries with incorrect language header",
        "Xhosa lemmas",
        "Xhosa nouns",
        "Xhosa terms with IPA pronunciation",
        "Xhosa terms with non-redundant non-automated sortkeys",
        "xh:Languages"
      ],
      "glosses": [
        "Zulu language"
      ],
      "links": [
        [
          "Zulu",
          "Zulu"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ísíz̥ṳːlu]"
    }
  ],
  "word": "isiZulu"
}