"exercice à trous" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Néologismes recommandés en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en croate",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "À en français",
      "orig": "à en français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Locutioncomposée de exercice et de trou."
  ],
  "forms": [
    {
      "form": "exercices à trous",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de l’éducation",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Exercice consistant à compléter un document présenté de façon lacunaire."
      ],
      "id": "fr-exercice_à_trous-fr-noun-iVhB4EvQ",
      "topics": [
        "education"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛɡ.zɛʁ.si.s‿a tʁu\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "gap-fill exercise"
    },
    {
      "lang": "Croate",
      "lang_code": "hr",
      "word": "vježbanje s dopunama"
    }
  ],
  "word": "exercice à trous"
}

{
  "categories": [
    "Compositions en français",
    "Locutions nominales en français",
    "Néologismes recommandés en français",
    "Traductions en anglais",
    "Traductions en croate",
    "français",
    "à en français"
  ],
  "etymology_texts": [
    "Locutioncomposée de exercice et de trou."
  ],
  "forms": [
    {
      "form": "exercices à trous",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en français de l’éducation"
      ],
      "glosses": [
        "Exercice consistant à compléter un document présenté de façon lacunaire."
      ],
      "topics": [
        "education"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ɛɡ.zɛʁ.si.s‿a tʁu\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "gap-fill exercise"
    },
    {
      "lang": "Croate",
      "lang_code": "hr",
      "word": "vježbanje s dopunama"
    }
  ],
  "word": "exercice à trous"
}