"the length of the Flemington straight" meaning in English

{
  "etymology_text": "In reference to Flemington Racecourse, the straight of which is 450m long and the focus of much of Australia at the end of the annual Melbourne Cup.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "the length of the Flemington straight",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Australian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2014 September 24, Steve O'Loughlin, “How to enjoy the AFL grand final if you can't be there”, in The Roar:",
          "text": "AFL grand final day is the best day of the year by the length of the Flemington straight.",
          "type": "quote"
        },
        {
          "ref": "2017 October 19, Mark Duffield, “Mark Duffield: If Lachie Weller wants out, the Dockers should trade him”, in The West Australian:",
          "text": "Given that Gold Coast and Fremantle appear the length of the Flemington straight apart, it is hard to see a deal being done.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A long way, a great distance, a large gap, a lot."
      ],
      "id": "en-the_length_of_the_Flemington_straight-en-noun-VasuP-GH",
      "raw_glosses": [
        "(Australia, informal, idiomatic) A long way, a great distance, a large gap, a lot."
      ],
      "tags": [
        "Australia",
        "idiomatic",
        "informal"
      ],
      "wikipedia": [
        "Flemington Racecourse",
        "Melbourne Cup"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-the length of the Flemington straight.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/37/En-au-the_length_of_the_Flemington_straight.ogg/En-au-the_length_of_the_Flemington_straight.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/37/En-au-the_length_of_the_Flemington_straight.ogg"
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  ],
  "word": "the length of the Flemington straight"
}

{
  "etymology_text": "In reference to Flemington Racecourse, the straight of which is 450m long and the focus of much of Australia at the end of the annual Melbourne Cup.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "the length of the Flemington straight",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Australian English",
        "English entries with incorrect language header",
        "English idioms",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2014 September 24, Steve O'Loughlin, “How to enjoy the AFL grand final if you can't be there”, in The Roar:",
          "text": "AFL grand final day is the best day of the year by the length of the Flemington straight.",
          "type": "quote"
        },
        {
          "ref": "2017 October 19, Mark Duffield, “Mark Duffield: If Lachie Weller wants out, the Dockers should trade him”, in The West Australian:",
          "text": "Given that Gold Coast and Fremantle appear the length of the Flemington straight apart, it is hard to see a deal being done.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A long way, a great distance, a large gap, a lot."
      ],
      "raw_glosses": [
        "(Australia, informal, idiomatic) A long way, a great distance, a large gap, a lot."
      ],
      "tags": [
        "Australia",
        "idiomatic",
        "informal"
      ],
      "wikipedia": [
        "Flemington Racecourse",
        "Melbourne Cup"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-the length of the Flemington straight.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/37/En-au-the_length_of_the_Flemington_straight.ogg/En-au-the_length_of_the_Flemington_straight.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/37/En-au-the_length_of_the_Flemington_straight.ogg"
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  ],
  "word": "the length of the Flemington straight"
}