"black operation" meaning in English

{
  "forms": [
    {
      "form": "black operations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "black operation (plural black operations)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Military",
          "orig": "en:Military",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A covert operation typically involving activities that are highly clandestine and outside of standard military protocol."
      ],
      "id": "en-black_operation-en-noun-KSq6-0xB",
      "links": [
        [
          "covert",
          "covert"
        ],
        [
          "operation",
          "operation"
        ],
        [
          "clandestine",
          "clandestine"
        ],
        [
          "military",
          "military"
        ],
        [
          "protocol",
          "protocol"
        ]
      ],
      "related": [
        {
          "word": "black bag operation"
        },
        {
          "word": "black helicopter"
        },
        {
          "word": "black jail"
        },
        {
          "word": "black site"
        }
      ],
      "synonyms": [
        {
          "word": "black op"
        }
      ]
    }
  ],
  "word": "black operation"
}

{
  "forms": [
    {
      "form": "black operations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "black operation (plural black operations)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "black bag operation"
    },
    {
      "word": "black helicopter"
    },
    {
      "word": "black jail"
    },
    {
      "word": "black site"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Military"
      ],
      "glosses": [
        "A covert operation typically involving activities that are highly clandestine and outside of standard military protocol."
      ],
      "links": [
        [
          "covert",
          "covert"
        ],
        [
          "operation",
          "operation"
        ],
        [
          "clandestine",
          "clandestine"
        ],
        [
          "military",
          "military"
        ],
        [
          "protocol",
          "protocol"
        ]
      ],
      "synonyms": [
        {
          "word": "black op"
        }
      ]
    }
  ],
  "word": "black operation"
}