"this is not a drill" meaning in All languages combined

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions-phrases en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Étymologie manquante ou incomplète. Si vous la connaissez, vous pouvez l’ajouter en cliquant ici."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "Locution-phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Métaphores en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes argotiques en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Ceci n'est pas un exercice."
      ],
      "id": "fr-this_is_not_a_drill-en-phrase-n1M0w2mQ",
      "tags": [
        "figuratively",
        "slang"
      ]
    }
  ],
  "word": "this is not a drill"
}

{
  "categories": [
    "Locutions-phrases en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Étymologie manquante ou incomplète. Si vous la connaissez, vous pouvez l’ajouter en cliquant ici."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "Locution-phrase",
  "senses": [
    {
      "categories": [
        "Métaphores en anglais",
        "Termes argotiques en anglais"
      ],
      "glosses": [
        "Ceci n'est pas un exercice."
      ],
      "tags": [
        "figuratively",
        "slang"
      ]
    }
  ],
  "word": "this is not a drill"
}