"mật danh" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "密名"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "密",
        "2": "secret",
        "3": "名",
        "4": "name"
      },
      "expansion": "Sino-Vietnamese word from 密 (“secret”) and 名 (“name”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 密 (“secret”) and 名 (“name”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "mật danh",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "mật danh",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words with uncreated Han etymology",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "code name"
      ],
      "id": "en-mật_danh-vi-noun-Gh92hCil",
      "links": [
        [
          "code name",
          "code name"
        ]
      ],
      "related": [
        {
          "word": "bí danh"
        },
        {
          "word": "bí mật"
        },
        {
          "word": "biệt danh"
        },
        {
          "word": "mật mã"
        }
      ],
      "synonyms": [
        {
          "sense": "code name",
          "word": "tên mã"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[mət̚˧˨ʔ zajŋ̟˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[mək̚˨˩ʔ jɛɲ˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[mək̚˨˩˨ jan˧˧]",
      "note": "Saigon"
    }
  ],
  "word": "mật danh"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "密名"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "密",
        "2": "secret",
        "3": "名",
        "4": "name"
      },
      "expansion": "Sino-Vietnamese word from 密 (“secret”) and 名 (“name”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 密 (“secret”) and 名 (“name”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "mật danh",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "mật danh",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "related": [
    {
      "word": "bí danh"
    },
    {
      "word": "bí mật"
    },
    {
      "word": "biệt danh"
    },
    {
      "word": "mật mã"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Sino-Vietnamese words",
        "Sino-Vietnamese words with uncreated Han etymology",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
        "Vietnamese terms with IPA pronunciation"
      ],
      "glosses": [
        "code name"
      ],
      "links": [
        [
          "code name",
          "code name"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[mət̚˧˨ʔ zajŋ̟˧˧]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[mək̚˨˩ʔ jɛɲ˧˧]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[mək̚˨˩˨ jan˧˧]",
      "note": "Saigon"
    }
  ],
  "synonyms": [
    {
      "sense": "code name",
      "word": "tên mã"
    }
  ],
  "word": "mật danh"
}