"night-sky" meaning in English

{
  "forms": [
    {
      "form": "night-skies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "night-sky (plural night-skies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "night sky"
        }
      ],
      "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": "1863, [George Alfred Lawrence], Border and Bastille, Leipzig: Bernhard Tauchnitz, pages 115–116:",
          "text": "I was riding slowly up a low, steep hill, about ten miles from Newmarket (I think the two or three houses are dignified by the name of Rockville), when I saw the indistinct forms of several horses, and the taller figure of one mounted man, standing out against the clear night-sky on the very crest of the ascent.",
          "type": "quote"
        },
        {
          "ref": "1887, T[homas] K[elly] Cheyne, “Is Job a Hebræo-Arabic Poem?”, in Job and Solomon; or, The Wisdom of the Old Testament, London: Kegan Paul, Trench, & Co., page 100:",
          "text": "Or that his interest in astronomy was not deepened by the spectacle of a night-sky in Arabia?",
          "type": "quote"
        },
        {
          "ref": "1890, S[abine] Baring-Gould, Urith: A Tale of Dartmoor, New York, N.Y.: United States Book Company, page 294:",
          "text": "It was not visible in the grey night-sky, and was still for a minute;",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of night sky"
      ],
      "id": "en-night-sky-en-noun-YzlGIhJS",
      "links": [
        [
          "night sky",
          "night sky#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "night-sky"
}

{
  "forms": [
    {
      "form": "night-skies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "night-sky (plural night-skies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "night sky"
        }
      ],
      "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": "1863, [George Alfred Lawrence], Border and Bastille, Leipzig: Bernhard Tauchnitz, pages 115–116:",
          "text": "I was riding slowly up a low, steep hill, about ten miles from Newmarket (I think the two or three houses are dignified by the name of Rockville), when I saw the indistinct forms of several horses, and the taller figure of one mounted man, standing out against the clear night-sky on the very crest of the ascent.",
          "type": "quote"
        },
        {
          "ref": "1887, T[homas] K[elly] Cheyne, “Is Job a Hebræo-Arabic Poem?”, in Job and Solomon; or, The Wisdom of the Old Testament, London: Kegan Paul, Trench, & Co., page 100:",
          "text": "Or that his interest in astronomy was not deepened by the spectacle of a night-sky in Arabia?",
          "type": "quote"
        },
        {
          "ref": "1890, S[abine] Baring-Gould, Urith: A Tale of Dartmoor, New York, N.Y.: United States Book Company, page 294:",
          "text": "It was not visible in the grey night-sky, and was still for a minute;",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of night sky"
      ],
      "links": [
        [
          "night sky",
          "night sky#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "night-sky"
}