"800 metres" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de 800 et de metres."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Sports athlétiques en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "800 mètres."
      ],
      "id": "fr-800_metres-en-noun-9KsawQj-",
      "topics": [
        "sports"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "800 meters"
    }
  ],
  "word": "800 metres"
}

{
  "categories": [
    "Compositions en anglais",
    "Locutions nominales en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Composé de 800 et de metres."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Sports athlétiques en anglais",
        "Wiktionnaire:Exemples manquants en anglais"
      ],
      "glosses": [
        "800 mètres."
      ],
      "topics": [
        "sports"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "800 meters"
    }
  ],
  "word": "800 metres"
}