"bal de promo" 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": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en espéranto",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "bal des finissants"
    },
    {
      "raw_tags": [
        "Québec"
      ],
      "word": "bal de finissants"
    },
    {
      "word": "graduation"
    },
    {
      "raw_tags": [
        "Québec"
      ],
      "sense": "considérés comme des anglicismes",
      "word": "bal de graduation"
    }
  ],
  "etymology_texts": [
    "Composé de bal et de promo."
  ],
  "forms": [
    {
      "form": "bals de promo",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de la danse",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en français de l’éducation",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Soirée dansante qui se tient traditionnellement à la fin de la dernière année d’un degré d’étude pour en célébrer l’achèvement."
      ],
      "id": "fr-bal_de_promo-fr-noun-OEs~NIDF",
      "topics": [
        "dance",
        "education"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\bal də pʁo.mo\\"
    },
    {
      "audio": "LL-Q150 (fra)-WikiLucas00-bal de promo.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/15/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/15/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav.ogg",
      "raw_tags": [
        "France (Lyon)"
      ],
      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-WikiLucas00-bal de promo.wav"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "prom"
    },
    {
      "lang": "Espéranto",
      "lang_code": "eo",
      "word": "promenejo balo"
    },
    {
      "lang": "Italien",
      "lang_code": "it",
      "tags": [
        "masculine"
      ],
      "word": "ballo di fine anno"
    }
  ],
  "word": "bal de promo"
}

{
  "categories": [
    "Compositions en français",
    "Locutions nominales en français",
    "Traductions en anglais",
    "Traductions en espéranto",
    "Traductions en italien",
    "français"
  ],
  "derived": [
    {
      "word": "bal des finissants"
    },
    {
      "raw_tags": [
        "Québec"
      ],
      "word": "bal de finissants"
    },
    {
      "word": "graduation"
    },
    {
      "raw_tags": [
        "Québec"
      ],
      "sense": "considérés comme des anglicismes",
      "word": "bal de graduation"
    }
  ],
  "etymology_texts": [
    "Composé de bal et de promo."
  ],
  "forms": [
    {
      "form": "bals de promo",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en français de la danse",
        "Lexique en français de l’éducation"
      ],
      "glosses": [
        "Soirée dansante qui se tient traditionnellement à la fin de la dernière année d’un degré d’étude pour en célébrer l’achèvement."
      ],
      "topics": [
        "dance",
        "education"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\bal də pʁo.mo\\"
    },
    {
      "audio": "LL-Q150 (fra)-WikiLucas00-bal de promo.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/15/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/15/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav/LL-Q150_(fra)-WikiLucas00-bal_de_promo.wav.ogg",
      "raw_tags": [
        "France (Lyon)"
      ],
      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-WikiLucas00-bal de promo.wav"
    }
  ],
  "tags": [
    "masculine"
  ],
  "translations": [
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "prom"
    },
    {
      "lang": "Espéranto",
      "lang_code": "eo",
      "word": "promenejo balo"
    },
    {
      "lang": "Italien",
      "lang_code": "it",
      "tags": [
        "masculine"
      ],
      "word": "ballo di fine anno"
    }
  ],
  "word": "bal de promo"
}