"seven-thirty" meaning in English

{
  "forms": [
    {
      "form": "seven-thirties",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seven-thirty (plural seven-thirties)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Currency",
          "orig": "en:Currency",
          "parents": [
            "Money",
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "In the United States, three-year Treasury Notes bearing interest at a rate of 7.30% anually. Made during the American Civil War, the notes had denominations of $50, $100, $500, $1,000, and $5,000."
      ],
      "id": "en-seven-thirty-en-noun-tRGBUcDe",
      "links": [
        [
          "denomination",
          "denomination"
        ]
      ],
      "raw_glosses": [
        "(historical) In the United States, three-year Treasury Notes bearing interest at a rate of 7.30% anually. Made during the American Civil War, the notes had denominations of $50, $100, $500, $1,000, and $5,000."
      ],
      "related": [
        {
          "word": "five-twenties"
        }
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "seven-thirty"
}

{
  "forms": [
    {
      "form": "seven-thirties",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seven-thirty (plural seven-thirties)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "five-twenties"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "en:Currency"
      ],
      "glosses": [
        "In the United States, three-year Treasury Notes bearing interest at a rate of 7.30% anually. Made during the American Civil War, the notes had denominations of $50, $100, $500, $1,000, and $5,000."
      ],
      "links": [
        [
          "denomination",
          "denomination"
        ]
      ],
      "raw_glosses": [
        "(historical) In the United States, three-year Treasury Notes bearing interest at a rate of 7.30% anually. Made during the American Civil War, the notes had denominations of $50, $100, $500, $1,000, and $5,000."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "seven-thirty"
}