"block hour" meaning in English

{
  "forms": [
    {
      "form": "block hours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "block hour (plural block 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": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
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          "parents": [],
          "source": "w"
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          "name": "Pages with entries",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aviation",
          "orig": "en:Aviation",
          "parents": [
            "Aeronautics",
            "Transport",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Some airlines average more than twelve block hours a day from their long-haul aircraft.",
          "type": "example"
        }
      ],
      "glosses": [
        "The time from the moment the door of an aircraft closes at departure of a revenue flight, until the moment the aircraft door opens at the arrival gate following its landing."
      ],
      "id": "en-block_hour-en-noun-ba5uanOs",
      "links": [
        [
          "aviation",
          "aviation"
        ],
        [
          "time",
          "time"
        ],
        [
          "moment",
          "moment"
        ],
        [
          "door",
          "door"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "close",
          "close"
        ],
        [
          "departure",
          "departure"
        ],
        [
          "revenue",
          "revenue"
        ],
        [
          "flight",
          "flight"
        ],
        [
          "arrival",
          "arrival"
        ],
        [
          "landing",
          "landing"
        ]
      ],
      "raw_glosses": [
        "(aviation) The time from the moment the door of an aircraft closes at departure of a revenue flight, until the moment the aircraft door opens at the arrival gate following its landing."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "aviation",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "aviation",
          "tags": [
            "masculine"
          ],
          "word": "temps de vol cale à cale"
        }
      ]
    }
  ],
  "word": "block hour"
}

{
  "forms": [
    {
      "form": "block hours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "block hour (plural block 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 usage examples",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with French translations",
        "en:Aviation"
      ],
      "examples": [
        {
          "text": "Some airlines average more than twelve block hours a day from their long-haul aircraft.",
          "type": "example"
        }
      ],
      "glosses": [
        "The time from the moment the door of an aircraft closes at departure of a revenue flight, until the moment the aircraft door opens at the arrival gate following its landing."
      ],
      "links": [
        [
          "aviation",
          "aviation"
        ],
        [
          "time",
          "time"
        ],
        [
          "moment",
          "moment"
        ],
        [
          "door",
          "door"
        ],
        [
          "aircraft",
          "aircraft"
        ],
        [
          "close",
          "close"
        ],
        [
          "departure",
          "departure"
        ],
        [
          "revenue",
          "revenue"
        ],
        [
          "flight",
          "flight"
        ],
        [
          "arrival",
          "arrival"
        ],
        [
          "landing",
          "landing"
        ]
      ],
      "raw_glosses": [
        "(aviation) The time from the moment the door of an aircraft closes at departure of a revenue flight, until the moment the aircraft door opens at the arrival gate following its landing."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "aviation",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "aviation",
      "tags": [
        "masculine"
      ],
      "word": "temps de vol cale à cale"
    }
  ],
  "word": "block hour"
}