"edge sorting" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "edge sorting (uncountable)",
      "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"
        }
      ],
      "glosses": [
        "A gambling technique by which a player determines whether a face-down playing card is likely to be low or high, by observing and exploiting subtle unintentional differences on the backs of some types of card, after arranging for the croupier to cooperate by unwittingly sorting the cards into low and high."
      ],
      "id": "en-edge_sorting-en-noun-eXfCtpDw",
      "links": [
        [
          "gambling",
          "gambling"
        ],
        [
          "technique",
          "technique"
        ],
        [
          "playing card",
          "playing card"
        ],
        [
          "croupier",
          "croupier"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "edge sorting"
      ]
    }
  ],
  "word": "edge sorting"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "edge sorting (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns"
      ],
      "glosses": [
        "A gambling technique by which a player determines whether a face-down playing card is likely to be low or high, by observing and exploiting subtle unintentional differences on the backs of some types of card, after arranging for the croupier to cooperate by unwittingly sorting the cards into low and high."
      ],
      "links": [
        [
          "gambling",
          "gambling"
        ],
        [
          "technique",
          "technique"
        ],
        [
          "playing card",
          "playing card"
        ],
        [
          "croupier",
          "croupier"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "edge sorting"
      ]
    }
  ],
  "word": "edge sorting"
}