"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"
        }
      ],
      "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": "quotation"
        }
      ],
      "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",
        "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": "quotation"
        }
      ],
      "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"
}