"go a raker" meaning in English

{
  "forms": [
    {
      "form": "goes a raker",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "going a raker",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "went a raker",
      "tags": [
        "past"
      ]
    },
    {
      "form": "gone a raker",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "go<goes,,went,gone> a raker"
      },
      "expansion": "go a raker (third-person singular simple present goes a raker, present participle going a raker, simple past went a raker, past participle gone a raker)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British 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": [
        {
          "text": "1891, 3 April, Lie. Vict. Gaz.\nThen he went a raker on the favourite for the St. Leger, but the brute was not even shopped."
        },
        {
          "ref": "1902, Finch Mason, Annals of the Horse-Shoe Club, page 195:",
          "text": "Finally, rendered desperate by failure after failure, I went a raker for a horse that I had heard on unquestionable authority was a real 'good thing' for the Cambridgeshire. He came in last but one in the race, […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "To bet a large amount of money on a certain racehorse."
      ],
      "id": "en-go_a_raker-en-verb-Bn8NYPPC",
      "links": [
        [
          "bet",
          "bet"
        ],
        [
          "money",
          "money"
        ],
        [
          "racehorse",
          "racehorse"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, archaic) To bet a large amount of money on a certain racehorse."
      ],
      "tags": [
        "UK",
        "archaic",
        "slang"
      ]
    }
  ],
  "word": "go a raker"
}

{
  "forms": [
    {
      "form": "goes a raker",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "going a raker",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "went a raker",
      "tags": [
        "past"
      ]
    },
    {
      "form": "gone a raker",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "go<goes,,went,gone> a raker"
      },
      "expansion": "go a raker (third-person singular simple present goes a raker, present participle going a raker, simple past went a raker, past participle gone a raker)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English slang",
        "English terms with archaic senses",
        "English terms with quotations",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "text": "1891, 3 April, Lie. Vict. Gaz.\nThen he went a raker on the favourite for the St. Leger, but the brute was not even shopped."
        },
        {
          "ref": "1902, Finch Mason, Annals of the Horse-Shoe Club, page 195:",
          "text": "Finally, rendered desperate by failure after failure, I went a raker for a horse that I had heard on unquestionable authority was a real 'good thing' for the Cambridgeshire. He came in last but one in the race, […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "To bet a large amount of money on a certain racehorse."
      ],
      "links": [
        [
          "bet",
          "bet"
        ],
        [
          "money",
          "money"
        ],
        [
          "racehorse",
          "racehorse"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, archaic) To bet a large amount of money on a certain racehorse."
      ],
      "tags": [
        "UK",
        "archaic",
        "slang"
      ]
    }
  ],
  "word": "go a raker"
}