"light hour" meaning in English

{
  "forms": [
    {
      "form": "light hours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "light hour (plural light 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": "topical",
          "langcode": "en",
          "name": "Astronomy",
          "orig": "en:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Light",
          "orig": "en:Light",
          "parents": [
            "Energy",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Units of measure",
          "orig": "en:Units of measure",
          "parents": [
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A unit of length equal to the distance light travels in one hour"
      ],
      "id": "en-light_hour-en-noun-mgwgantX",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "length",
          "length"
        ],
        [
          "distance",
          "distance"
        ],
        [
          "light",
          "light"
        ],
        [
          "hour",
          "hour"
        ]
      ],
      "raw_glosses": [
        "(astronomy, physics) A unit of length equal to the distance light travels in one hour"
      ],
      "topics": [
        "astronomy",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "unit of distance",
          "word": "光時"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "guāngshí",
          "sense": "unit of distance",
          "word": "光时"
        },
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "světelná hodina"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "heure-lumière"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "Lichtstunde"
        },
        {
          "code": "gu",
          "lang": "Gujarati",
          "roman": "prakāśaklāk",
          "sense": "unit of distance",
          "word": "પ્રકાશકલાક"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "unit of distance",
          "word": "fényóra"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "ora luce"
        },
        {
          "code": "ko",
          "lang": "Korean",
          "roman": "gwangsi",
          "sense": "unit of distance",
          "word": "광시"
        },
        {
          "code": "ms",
          "lang": "Malay",
          "sense": "unit of distance",
          "word": "jam cahaya"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "godzina świetlna"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "hora-luz"
        },
        {
          "code": "scn",
          "lang": "Sicilian",
          "sense": "unit of distance",
          "word": "uora luci"
        },
        {
          "code": "sk",
          "lang": "Slovak",
          "sense": "unit of distance",
          "tags": [
            "feminine"
          ],
          "word": "svetelná hodina"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "unit of distance",
          "word": "ışık saati"
        }
      ]
    }
  ],
  "word": "light hour"
}

{
  "forms": [
    {
      "form": "light hours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "light hour (plural light 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",
        "en:Astronomy",
        "en:Light",
        "en:Physics",
        "en:Units of measure"
      ],
      "glosses": [
        "A unit of length equal to the distance light travels in one hour"
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "length",
          "length"
        ],
        [
          "distance",
          "distance"
        ],
        [
          "light",
          "light"
        ],
        [
          "hour",
          "hour"
        ]
      ],
      "raw_glosses": [
        "(astronomy, physics) A unit of length equal to the distance light travels in one hour"
      ],
      "topics": [
        "astronomy",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "unit of distance",
      "word": "光時"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "guāngshí",
      "sense": "unit of distance",
      "word": "光时"
    },
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "světelná hodina"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "heure-lumière"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "Lichtstunde"
    },
    {
      "code": "gu",
      "lang": "Gujarati",
      "roman": "prakāśaklāk",
      "sense": "unit of distance",
      "word": "પ્રકાશકલાક"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "unit of distance",
      "word": "fényóra"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "ora luce"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "gwangsi",
      "sense": "unit of distance",
      "word": "광시"
    },
    {
      "code": "ms",
      "lang": "Malay",
      "sense": "unit of distance",
      "word": "jam cahaya"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "godzina świetlna"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "hora-luz"
    },
    {
      "code": "scn",
      "lang": "Sicilian",
      "sense": "unit of distance",
      "word": "uora luci"
    },
    {
      "code": "sk",
      "lang": "Slovak",
      "sense": "unit of distance",
      "tags": [
        "feminine"
      ],
      "word": "svetelná hodina"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "unit of distance",
      "word": "ışık saati"
    }
  ],
  "word": "light hour"
}