"skull session" meaning in English

{
  "forms": [
    {
      "form": "skull sessions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "skull session (plural skull sessions)",
      "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": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Business",
          "orig": "en:Business",
          "parents": [
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sports",
          "orig": "en:Sports",
          "parents": [
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A meeting for the purpose of brainstorming or developing a strategy."
      ],
      "id": "en-skull_session-en-noun-b2PwCK19",
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "business",
          "business"
        ],
        [
          "meeting",
          "meeting"
        ],
        [
          "brainstorming",
          "brainstorming"
        ],
        [
          "strategy",
          "strategy"
        ]
      ],
      "raw_glosses": [
        "(sports, business, slang) A meeting for the purpose of brainstorming or developing a strategy."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "business",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "skull session"
}

{
  "forms": [
    {
      "form": "skull sessions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "skull session (plural skull sessions)",
      "name": "en-noun"
    }
  ],
  "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",
        "English slang",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Business",
        "en:Sports"
      ],
      "glosses": [
        "A meeting for the purpose of brainstorming or developing a strategy."
      ],
      "links": [
        [
          "sports",
          "sports"
        ],
        [
          "business",
          "business"
        ],
        [
          "meeting",
          "meeting"
        ],
        [
          "brainstorming",
          "brainstorming"
        ],
        [
          "strategy",
          "strategy"
        ]
      ],
      "raw_glosses": [
        "(sports, business, slang) A meeting for the purpose of brainstorming or developing a strategy."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "business",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "word": "skull session"
}