"engine hour" meaning in English

{
  "forms": [
    {
      "form": "engine hours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "engine hour (plural engine hours)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1964 January, “The maintenance of B.R. diesel-electric locomotives”, in Modern Railways, page 54:",
          "text": "Locomotive care is based on a system of preventive maintenance on an engine-hour basis. The majority of locomotives are not yet fitted with engine-hour recorders and examinations are, therefore, based on a computation of the locomotive-hours in traffic.",
          "type": "quote"
        },
        {
          "ref": "2023 November 29, “Last remaining DB Cargo Class 60s face final workings in December”, in RAIL, number 997, page 19:",
          "text": "The remaining four locomotives in traffic […] are all expected to be stood down due to their high engine hours, as well as being due exams which the company is not prepared to undertake.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An hour of operation of an engine."
      ],
      "id": "en-engine_hour-en-noun-IblU~V0c",
      "links": [
        [
          "operation",
          "operation"
        ]
      ]
    }
  ],
  "word": "engine hour"
}

{
  "forms": [
    {
      "form": "engine hours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "engine hour (plural engine hours)",
      "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 with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1964 January, “The maintenance of B.R. diesel-electric locomotives”, in Modern Railways, page 54:",
          "text": "Locomotive care is based on a system of preventive maintenance on an engine-hour basis. The majority of locomotives are not yet fitted with engine-hour recorders and examinations are, therefore, based on a computation of the locomotive-hours in traffic.",
          "type": "quote"
        },
        {
          "ref": "2023 November 29, “Last remaining DB Cargo Class 60s face final workings in December”, in RAIL, number 997, page 19:",
          "text": "The remaining four locomotives in traffic […] are all expected to be stood down due to their high engine hours, as well as being due exams which the company is not prepared to undertake.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An hour of operation of an engine."
      ],
      "links": [
        [
          "operation",
          "operation"
        ]
      ]
    }
  ],
  "word": "engine hour"
}