"galaxy group" meaning in English

{
  "forms": [
    {
      "form": "galaxy groups",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "galaxy group (plural galaxy groups)",
      "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"
        }
      ],
      "glosses": [
        "A group of galaxies that hold together gravitationally."
      ],
      "id": "en-galaxy_group-en-noun-f9QoQ3lP",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "galaxies",
          "galaxies"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A group of galaxies that hold together gravitationally."
      ],
      "related": [
        {
          "word": "galaxy"
        },
        {
          "word": "galaxy cluster"
        },
        {
          "word": "protogroup"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "skupina galaxií"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "groupe de galaxies"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "Galaxiengruppe"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "Translations",
          "word": "galaksi grubu"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "Translations",
          "word": "gökada öbeği"
        }
      ],
      "wikipedia": [
        "galaxy group"
      ]
    }
  ],
  "word": "galaxy group"
}

{
  "forms": [
    {
      "form": "galaxy groups",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "galaxy group (plural galaxy groups)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "galaxy"
    },
    {
      "word": "galaxy cluster"
    },
    {
      "word": "protogroup"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Translation table header lacks gloss",
        "en:Astronomy"
      ],
      "glosses": [
        "A group of galaxies that hold together gravitationally."
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "galaxies",
          "galaxies"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A group of galaxies that hold together gravitationally."
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "wikipedia": [
        "galaxy group"
      ]
    }
  ],
  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "skupina galaxií"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "groupe de galaxies"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "Galaxiengruppe"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "Translations",
      "word": "galaksi grubu"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "Translations",
      "word": "gökada öbeği"
    }
  ],
  "word": "galaxy group"
}