"24-hour clock" meaning in English

{
  "antonyms": [
    {
      "word": "12-hour clock"
    }
  ],
  "forms": [
    {
      "form": "24-hour clocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "24-hour clock"
      },
      "expansion": "24-hour clock (plural 24-hour clocks)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1961 December, “Talking of Trains: 24hr clock experiment at York”, in Trains Illustrated, page 712",
          "text": "Train and steamer services to and from the Continent, including the boat trains in England, have long had 24hr clock indications, mainly to conform with the practice of connecting Continental railways, for Irish services are exempt.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A timekeeping convention in which the 24 hours of the day are each treated as a single period, rather than two sets of 12 hours."
      ],
      "id": "en-24-hour_clock-en-noun-rSgHe6Zx",
      "links": [
        [
          "timekeeping",
          "timekeeping"
        ],
        [
          "hour",
          "hour"
        ],
        [
          "day",
          "day"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "US"
          ],
          "word": "military time"
        }
      ],
      "wikipedia": [
        "24-hour clock"
      ]
    }
  ],
  "word": "24-hour clock"
}

{
  "antonyms": [
    {
      "word": "12-hour clock"
    }
  ],
  "forms": [
    {
      "form": "24-hour clocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "24-hour clock"
      },
      "expansion": "24-hour clock (plural 24-hour clocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms spelled with numbers",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1961 December, “Talking of Trains: 24hr clock experiment at York”, in Trains Illustrated, page 712",
          "text": "Train and steamer services to and from the Continent, including the boat trains in England, have long had 24hr clock indications, mainly to conform with the practice of connecting Continental railways, for Irish services are exempt.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A timekeeping convention in which the 24 hours of the day are each treated as a single period, rather than two sets of 12 hours."
      ],
      "links": [
        [
          "timekeeping",
          "timekeeping"
        ],
        [
          "hour",
          "hour"
        ],
        [
          "day",
          "day"
        ]
      ],
      "wikipedia": [
        "24-hour clock"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "US"
      ],
      "word": "military time"
    }
  ],
  "word": "24-hour clock"
}