"first light" meaning in English

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  "lang_code": "en",
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      "glosses": [
        "The time when light first appears in the morning; dawn, especially the start of dawn."
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        [
          "dawn",
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          "_dis1": "69 31",
          "word": "break of day"
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          "word": "daybreak"
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          "word": "dayspring"
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          "_dis1": "69 31",
          "word": "dawn"
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          "_dis1": "69 31",
          "word": "cockcrow"
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          "_dis1": "69 31",
          "word": "firstlight"
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          "name": "Astronomy",
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        "The first use of a telescope or other instrument to capture an astronomical image."
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        "(astronomy) The first use of a telescope or other instrument to capture an astronomical image."
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        "natural-sciences"
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  "wikipedia": [
    "first light (astronomy)"
  ],
  "word": "first light"
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      "glosses": [
        "The time when light first appears in the morning; dawn, especially the start of dawn."
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        "The first use of a telescope or other instrument to capture an astronomical image."
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        "(astronomy) The first use of a telescope or other instrument to capture an astronomical image."
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      "word": "break of day"
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    {
      "word": "daybreak"
    },
    {
      "word": "dayspring"
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    {
      "word": "dawn"
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    {
      "word": "cockcrow"
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    {
      "word": "firstlight"
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