"Penney's game" meaning in English

{
  "etymology_text": "Named after its inventor, Walter Penney.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Penney's game",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A game for two players in which each player selects an equally long sequence of heads or tails. The winner is the player whose sequence occurs first when a fair coin is tossed repeatedly."
      ],
      "id": "en-Penney's_game-en-name-JyWW0noF",
      "links": [
        [
          "game",
          "game"
        ],
        [
          "player",
          "player"
        ],
        [
          "sequence",
          "sequence"
        ],
        [
          "heads or tails",
          "heads or tails"
        ],
        [
          "coin",
          "coin"
        ],
        [
          "toss",
          "toss"
        ]
      ]
    }
  ],
  "word": "Penney's game"
}

{
  "etymology_text": "Named after its inventor, Walter Penney.",
  "head_templates": [
    {
      "args": {},
      "expansion": "Penney's game",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns"
      ],
      "glosses": [
        "A game for two players in which each player selects an equally long sequence of heads or tails. The winner is the player whose sequence occurs first when a fair coin is tossed repeatedly."
      ],
      "links": [
        [
          "game",
          "game"
        ],
        [
          "player",
          "player"
        ],
        [
          "sequence",
          "sequence"
        ],
        [
          "heads or tails",
          "heads or tails"
        ],
        [
          "coin",
          "coin"
        ],
        [
          "toss",
          "toss"
        ]
      ]
    }
  ],
  "word": "Penney's game"
}