"open convention" meaning in English

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    {
      "form": "open conventions",
      "tags": [
        "plural"
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      "expansion": "open convention (plural open conventions)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "English entries with incorrect language header",
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          "langcode": "en",
          "name": "US politics",
          "orig": "en:US politics",
          "parents": [
            "Politics",
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            "Society",
            "North America",
            "All topics",
            "America",
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      "glosses": [
        "Synonym of brokered convention"
      ],
      "id": "en-open_convention-en-noun-fTrQ8R7V",
      "links": [
        [
          "brokered convention",
          "brokered convention#English"
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      "raw_glosses": [
        "(US politics) Synonym of brokered convention"
      ],
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            "synonym",
            "synonym-of"
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          "word": "brokered convention"
        }
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      "tags": [
        "US"
      ],
      "topics": [
        "government",
        "politics"
      ]
    }
  ],
  "word": "open convention"
}

{
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    {
      "form": "open conventions",
      "tags": [
        "plural"
      ]
    }
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  "head_templates": [
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      "args": {},
      "expansion": "open convention (plural open conventions)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
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      "glosses": [
        "Synonym of brokered convention"
      ],
      "links": [
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          "brokered convention",
          "brokered convention#English"
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        "(US politics) Synonym of brokered convention"
      ],
      "synonyms": [
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            "synonym",
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          "word": "brokered convention"
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      ],
      "tags": [
        "US"
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      "topics": [
        "government",
        "politics"
      ]
    }
  ],
  "word": "open convention"
}