"chữ cái" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Han or Nôm character; letter"
      },
      "expansion": "Han or Nôm character; letter",
      "name": "l"
    },
    {
      "args": {
        "1": "en",
        "2": "main"
      },
      "expansion": "main",
      "name": "l"
    },
    {
      "args": {
        "1": "vi",
        "2": "chữ",
        "3": "cái",
        "t1": "Han or Nôm character; letter",
        "t2": "main"
      },
      "expansion": "chữ (“Han or Nôm character; letter”) + cái (“main”)",
      "name": "af"
    }
  ],
  "etymology_text": "chữ (“Han or Nôm character; letter”) + cái (“main”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "chữ cái",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "chữ cái",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese nouns without classifiers",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Orthography",
          "orig": "vi:Orthography",
          "parents": [
            "Writing",
            "Human behaviour",
            "Language",
            "Human",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a letter"
      ],
      "id": "en-chữ_cái-vi-noun-W7J~uGyA",
      "links": [
        [
          "orthography",
          "orthography"
        ],
        [
          "letter",
          "letter#English"
        ]
      ],
      "raw_glosses": [
        "(orthography) a letter"
      ],
      "related": [
        {
          "word": "thư"
        }
      ],
      "synonyms": [
        {
          "word": "mẫu tự"
        }
      ],
      "topics": [
        "communications",
        "journalism",
        "literature",
        "media",
        "orthography",
        "publishing",
        "writing"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕɨ˦ˀ˥ kaːj˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[t͡ɕɨ˧˨ kaːj˨˩˦]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[cɨ˨˩˦ kaːj˦˥]",
      "tags": [
        "Hồ-Chí-Minh-City"
      ]
    }
  ],
  "word": "chữ cái"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Han or Nôm character; letter"
      },
      "expansion": "Han or Nôm character; letter",
      "name": "l"
    },
    {
      "args": {
        "1": "en",
        "2": "main"
      },
      "expansion": "main",
      "name": "l"
    },
    {
      "args": {
        "1": "vi",
        "2": "chữ",
        "3": "cái",
        "t1": "Han or Nôm character; letter",
        "t2": "main"
      },
      "expansion": "chữ (“Han or Nôm character; letter”) + cái (“main”)",
      "name": "af"
    }
  ],
  "etymology_text": "chữ (“Han or Nôm character; letter”) + cái (“main”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "chữ cái",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "chữ cái",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "related": [
    {
      "word": "thư"
    }
  ],
  "senses": [
    {
      "categories": [
        "Vietnamese compound terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
        "Vietnamese nouns without classifiers",
        "Vietnamese terms with IPA pronunciation",
        "vi:Orthography"
      ],
      "glosses": [
        "a letter"
      ],
      "links": [
        [
          "orthography",
          "orthography"
        ],
        [
          "letter",
          "letter#English"
        ]
      ],
      "raw_glosses": [
        "(orthography) a letter"
      ],
      "synonyms": [
        {
          "word": "mẫu tự"
        }
      ],
      "topics": [
        "communications",
        "journalism",
        "literature",
        "media",
        "orthography",
        "publishing",
        "writing"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕɨ˦ˀ˥ kaːj˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[t͡ɕɨ˧˨ kaːj˨˩˦]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[cɨ˨˩˦ kaːj˦˥]",
      "tags": [
        "Hồ-Chí-Minh-City"
      ]
    }
  ],
  "word": "chữ cái"
}