"mật phục" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "密服"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "密",
        "2": "secret",
        "3": "服",
        "4": "garment"
      },
      "expansion": "Sino-Vietnamese word from 密 (“secret”) and 服 (“garment”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 密 (“secret”) and 服 (“garment”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "mật phục",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "mật phục",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Law enforcement",
          "orig": "vi:Law enforcement",
          "parents": [
            "Crime prevention",
            "Emergency services",
            "Law",
            "Crime",
            "Public safety",
            "Justice",
            "Criminal law",
            "Society",
            "Public administration",
            "Security",
            "All topics",
            "Government",
            "Fundamental",
            "Politics"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "police who poses as civilian"
      ],
      "id": "en-mật_phục-vi-noun-C0grfM5-",
      "links": [
        [
          "police",
          "police"
        ],
        [
          "pose",
          "pose"
        ],
        [
          "civilian",
          "civilian"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[mət̚˧˨ʔ fʊwk͡p̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[mək̚˨˩ʔ fʊwk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[mək̚˨˩˨ fʊwk͡p̚˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "mật phục"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "密服"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "密",
        "2": "secret",
        "3": "服",
        "4": "garment"
      },
      "expansion": "Sino-Vietnamese word from 密 (“secret”) and 服 (“garment”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 密 (“secret”) and 服 (“garment”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "mật phục",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "mật phục",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "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",
        "vi:Law enforcement"
      ],
      "glosses": [
        "police who poses as civilian"
      ],
      "links": [
        [
          "police",
          "police"
        ],
        [
          "pose",
          "pose"
        ],
        [
          "civilian",
          "civilian"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[mət̚˧˨ʔ fʊwk͡p̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[mək̚˨˩ʔ fʊwk͡p̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[mək̚˨˩˨ fʊwk͡p̚˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "mật phục"
}