"market horse" meaning in English

{
  "forms": [
    {
      "form": "market horses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "market horse (plural market horses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "source": "w"
        },
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          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Horse racing",
          "orig": "en:Horse racing",
          "parents": [
            "Equestrianism",
            "Horses",
            "Animal riding",
            "Sports",
            "Equids",
            "Livestock",
            "Transport",
            "Human activity",
            "Odd-toed ungulates",
            "Agriculture",
            "Animals",
            "All topics",
            "Human behaviour",
            "Mammals",
            "Applied sciences",
            "Lifeforms",
            "Fundamental",
            "Human",
            "Vertebrates",
            "Sciences",
            "Life",
            "Chordates",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1892, James Glass Bertram, A Mirror of the Turf, page 271:",
          "text": "[N]othing is easier than to make sure […] that the horse selected, in the event of the public fancying him, shall be made a market horse, and be “milked” for the benefit of those interested: the losing of a race may at any time be ensured, and there are scores of “turf dairymen” who are reputed adepts in the use of the milking pail.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A horse kept in the betting-lists for the sole purpose of being betted against."
      ],
      "id": "en-market_horse-en-noun-hAM0uoY1",
      "links": [
        [
          "horse racing",
          "horse racing"
        ]
      ],
      "raw_glosses": [
        "(horse racing, slang, obsolete) A horse kept in the betting-lists for the sole purpose of being betted against."
      ],
      "tags": [
        "obsolete",
        "slang"
      ],
      "topics": [
        "hobbies",
        "horse-racing",
        "horseracing",
        "horses",
        "lifestyle",
        "pets",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "market horse"
}

{
  "forms": [
    {
      "form": "market horses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "market horse (plural market horses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "English terms with obsolete senses",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Horse racing"
      ],
      "examples": [
        {
          "ref": "1892, James Glass Bertram, A Mirror of the Turf, page 271:",
          "text": "[N]othing is easier than to make sure […] that the horse selected, in the event of the public fancying him, shall be made a market horse, and be “milked” for the benefit of those interested: the losing of a race may at any time be ensured, and there are scores of “turf dairymen” who are reputed adepts in the use of the milking pail.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A horse kept in the betting-lists for the sole purpose of being betted against."
      ],
      "links": [
        [
          "horse racing",
          "horse racing"
        ]
      ],
      "raw_glosses": [
        "(horse racing, slang, obsolete) A horse kept in the betting-lists for the sole purpose of being betted against."
      ],
      "tags": [
        "obsolete",
        "slang"
      ],
      "topics": [
        "hobbies",
        "horse-racing",
        "horseracing",
        "horses",
        "lifestyle",
        "pets",
        "racing",
        "sports"
      ]
    }
  ],
  "word": "market horse"
}