"course de chars" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en allemand",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en espagnol",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en néerlandais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Traductions en portugais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de course et de char au pluriel."
  ],
  "forms": [
    {
      "form": "courses de chars",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_id": "fr-nom-1",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de l’Antiquité",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en français du cirque",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Course de vitesse opposant des chars conduits par des auriges, dans les jeux du cirque."
      ],
      "id": "fr-course_de_chars-fr-noun-4lw6lvRz",
      "tags": [
        "Ancient"
      ],
      "topics": [
        "circus"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\kuʁs də ʃaʁ\\"
    },
    {
      "audio": "LL-Q150 (fra)-Tamahashi-course de chars.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4a/LL-Q150_(fra)-Tamahashi-course_de_chars.wav/LL-Q150_(fra)-Tamahashi-course_de_chars.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4a/LL-Q150_(fra)-Tamahashi-course_de_chars.wav/LL-Q150_(fra)-Tamahashi-course_de_chars.wav.ogg",
      "raw_tags": [
        "France (Grenoble)"
      ],
      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-Tamahashi-course de chars.wav"
    }
  ],
  "tags": [
    "feminine"
  ],
  "translations": [
    {
      "lang": "Allemand",
      "lang_code": "de",
      "word": "Wagenrennen"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "chariot racing"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "word": "carreras de carros"
    },
    {
      "lang": "Italien",
      "lang_code": "it",
      "word": "corsa dei carri"
    },
    {
      "lang": "Néerlandais",
      "lang_code": "nl",
      "word": "Wagenrennen"
    },
    {
      "lang": "Portugais",
      "lang_code": "pt",
      "word": "corrida de bigas"
    }
  ],
  "word": "course de chars"
}

{
  "categories": [
    "Locutions nominales en français",
    "Traductions en allemand",
    "Traductions en anglais",
    "Traductions en espagnol",
    "Traductions en italien",
    "Traductions en néerlandais",
    "Traductions en portugais",
    "français"
  ],
  "etymology_texts": [
    "Composé de course et de char au pluriel."
  ],
  "forms": [
    {
      "form": "courses de chars",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_id": "fr-nom-1",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en français de l’Antiquité",
        "Lexique en français du cirque"
      ],
      "glosses": [
        "Course de vitesse opposant des chars conduits par des auriges, dans les jeux du cirque."
      ],
      "tags": [
        "Ancient"
      ],
      "topics": [
        "circus"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\kuʁs də ʃaʁ\\"
    },
    {
      "audio": "LL-Q150 (fra)-Tamahashi-course de chars.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4a/LL-Q150_(fra)-Tamahashi-course_de_chars.wav/LL-Q150_(fra)-Tamahashi-course_de_chars.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4a/LL-Q150_(fra)-Tamahashi-course_de_chars.wav/LL-Q150_(fra)-Tamahashi-course_de_chars.wav.ogg",
      "raw_tags": [
        "France (Grenoble)"
      ],
      "wav_url": "https://commons.wikimedia.org/wiki/Special:FilePath/LL-Q150 (fra)-Tamahashi-course de chars.wav"
    }
  ],
  "tags": [
    "feminine"
  ],
  "translations": [
    {
      "lang": "Allemand",
      "lang_code": "de",
      "word": "Wagenrennen"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "chariot racing"
    },
    {
      "lang": "Espagnol",
      "lang_code": "es",
      "word": "carreras de carros"
    },
    {
      "lang": "Italien",
      "lang_code": "it",
      "word": "corsa dei carri"
    },
    {
      "lang": "Néerlandais",
      "lang_code": "nl",
      "word": "Wagenrennen"
    },
    {
      "lang": "Portugais",
      "lang_code": "pt",
      "word": "corrida de bigas"
    }
  ],
  "word": "course de chars"
}