"blue hook star" meaning in English

{
  "etymology_text": "From their location on the blue horizontal branch portion of the extreme horizontal branch part of the horizontal branch of stellar evolution, hooking upwards when plotted on an H-R diagram.",
  "forms": [
    {
      "form": "blue hook stars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blue hook star (plural blue hook stars)",
      "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": "Stars",
          "orig": "en:Stars",
          "parents": [
            "Celestial bodies",
            "Space",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a type of helium-burning blue giant star that is hotter than the average star in this stage of their life, due to having a more massive helium core"
      ],
      "hypernyms": [
        {
          "word": "blue giant star"
        },
        {
          "word": "blue giant"
        },
        {
          "english": "BHB star",
          "word": "blue horizontal branch star"
        },
        {
          "english": "EHB star",
          "word": "extreme horizontal branch star"
        },
        {
          "english": "HB star",
          "word": "horizontal branch star"
        }
      ],
      "id": "en-blue_hook_star-en-noun-ZG4ew-QA",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "blue giant",
          "blue giant"
        ],
        [
          "star",
          "star"
        ]
      ],
      "raw_glosses": [
        "(astronomy) a type of helium-burning blue giant star that is hotter than the average star in this stage of their life, due to having a more massive helium core"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "blue hook star"
}

{
  "etymology_text": "From their location on the blue horizontal branch portion of the extreme horizontal branch part of the horizontal branch of stellar evolution, hooking upwards when plotted on an H-R diagram.",
  "forms": [
    {
      "form": "blue hook stars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blue hook star (plural blue hook stars)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "blue giant star"
    },
    {
      "word": "blue giant"
    },
    {
      "english": "BHB star",
      "word": "blue horizontal branch star"
    },
    {
      "english": "EHB star",
      "word": "extreme horizontal branch star"
    },
    {
      "english": "HB star",
      "word": "horizontal branch star"
    }
  ],
  "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:Stars"
      ],
      "glosses": [
        "a type of helium-burning blue giant star that is hotter than the average star in this stage of their life, due to having a more massive helium core"
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "blue giant",
          "blue giant"
        ],
        [
          "star",
          "star"
        ]
      ],
      "raw_glosses": [
        "(astronomy) a type of helium-burning blue giant star that is hotter than the average star in this stage of their life, due to having a more massive helium core"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "blue hook star"
}