"cổ ngữ" meaning in Vietnamese

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      "expansion": "cổ ngữ",
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  "lang": "Vietnamese",
  "lang_code": "vi",
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          "text": "cuốn sách viết bằng cổ ngữ Latinh",
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        "ancient language"
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        "(literary) ancient language"
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        "(literary) old saying"
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  ],
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    {
      "ipa": "[ko˧˩ ŋɨ˦ˀ˥]",
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        "Hà-Nội"
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    },
    {
      "ipa": "[kow˧˨ ŋɨ˧˨]",
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        "Huế"
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    },
    {
      "ipa": "[kow˨˩˦ ŋɨ˨˩˦]",
      "note": "Saigon"
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  "word": "cổ ngữ"
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      "expansion": "cổ ngữ",
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      "args": {},
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        "(literary) old saying"
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    {
      "ipa": "[kow˨˩˦ ŋɨ˨˩˦]",
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  "word": "cổ ngữ"
}