"training exercise" meaning in English

{
  "forms": [
    {
      "form": "training exercises",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "training exercise (plural training exercises)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A military exercise."
      ],
      "id": "en-training_exercise-en-noun-f0F0jKyi",
      "links": [
        [
          "military exercise",
          "military exercise"
        ]
      ]
    },
    {
      "categories": [
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          "_dis": "7 93",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
        },
        {
          "_dis": "9 91",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "8 92",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A simulation of an activity for the purpose of learning how to perform that activity."
      ],
      "id": "en-training_exercise-en-noun-POTydGgB",
      "links": [
        [
          "simulation",
          "simulation"
        ]
      ]
    }
  ],
  "word": "training exercise"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "training exercises",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "training exercise (plural training exercises)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A military exercise."
      ],
      "links": [
        [
          "military exercise",
          "military exercise"
        ]
      ]
    },
    {
      "glosses": [
        "A simulation of an activity for the purpose of learning how to perform that activity."
      ],
      "links": [
        [
          "simulation",
          "simulation"
        ]
      ]
    }
  ],
  "word": "training exercise"
}