"star clock" meaning in English

{
  "forms": [
    {
      "form": "star clocks",
      "tags": [
        "plural"
      ]
    }
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  "head_templates": [
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      "expansion": "star clock (plural star clocks)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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      "glosses": [
        "Synonym of nocturnal (“device for telling time”)"
      ],
      "id": "en-star_clock-en-noun-YSkytHDF",
      "links": [
        [
          "nocturnal",
          "nocturnal#English"
        ]
      ],
      "synonyms": [
        {
          "extra": "device for telling time",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "nocturnal"
        }
      ],
      "wikipedia": [
        "star clock"
      ]
    }
  ],
  "word": "star clock"
}

{
  "forms": [
    {
      "form": "star clocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "star clock (plural star clocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
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      "glosses": [
        "Synonym of nocturnal (“device for telling time”)"
      ],
      "links": [
        [
          "nocturnal",
          "nocturnal#English"
        ]
      ],
      "synonyms": [
        {
          "extra": "device for telling time",
          "tags": [
            "synonym",
            "synonym-of"
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          "word": "nocturnal"
        }
      ],
      "wikipedia": [
        "star clock"
      ]
    }
  ],
  "word": "star clock"
}