"pie rule" meaning in English

{
  "etymology_text": "From the idea of dividing up a pie fairly: one person cuts and the other chooses a slice.",
  "forms": [
    {
      "form": "pie rules",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pie rule (plural pie rules)",
      "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": "Games",
          "orig": "en:Games",
          "parents": [
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A rule used in certain strategy games for the purpose of fairness, where immediately after the first player's initial move the opposing player may optionally switch, taking over the first player's role and position for the rest of the game."
      ],
      "id": "en-pie_rule-en-noun-MZymlvhl",
      "links": [
        [
          "games",
          "game#Noun"
        ],
        [
          "strategy game",
          "strategy game"
        ],
        [
          "move",
          "move"
        ],
        [
          "switch",
          "switch"
        ]
      ],
      "raw_glosses": [
        "(games) A rule used in certain strategy games for the purpose of fairness, where immediately after the first player's initial move the opposing player may optionally switch, taking over the first player's role and position for the rest of the game."
      ],
      "related": [
        {
          "word": "komi"
        }
      ],
      "synonyms": [
        {
          "word": "swap rule"
        }
      ],
      "topics": [
        "games"
      ],
      "wikipedia": [
        "pie rule"
      ]
    }
  ],
  "word": "pie rule"
}

{
  "etymology_text": "From the idea of dividing up a pie fairly: one person cuts and the other chooses a slice.",
  "forms": [
    {
      "form": "pie rules",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pie rule (plural pie rules)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "komi"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Games"
      ],
      "glosses": [
        "A rule used in certain strategy games for the purpose of fairness, where immediately after the first player's initial move the opposing player may optionally switch, taking over the first player's role and position for the rest of the game."
      ],
      "links": [
        [
          "games",
          "game#Noun"
        ],
        [
          "strategy game",
          "strategy game"
        ],
        [
          "move",
          "move"
        ],
        [
          "switch",
          "switch"
        ]
      ],
      "raw_glosses": [
        "(games) A rule used in certain strategy games for the purpose of fairness, where immediately after the first player's initial move the opposing player may optionally switch, taking over the first player's role and position for the rest of the game."
      ],
      "synonyms": [
        {
          "word": "swap rule"
        }
      ],
      "topics": [
        "games"
      ],
      "wikipedia": [
        "pie rule"
      ]
    }
  ],
  "word": "pie rule"
}