"card mechanic" meaning in English

{
  "forms": [
    {
      "form": "card mechanics",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "card mechanic (plural card mechanics)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2007, Gordon Donnell, The Only Game in Town",
          "text": "Card mechanics practice bottom dealing in front of a mirror until it becomes so natural they can't see themselves cheat.",
          "type": "quotation"
        },
        {
          "ref": "2010, William Harrison, The Mutations of Rollerball: Essays, page 48",
          "text": "The rights to Titanic's story is owned by the gambler's son—a card mechanic of some repute himself—and these rights have been sold recently to a dentist in Dallas who teamed up with an advertising executive from Fort Worth […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A cardsharp."
      ],
      "hyponyms": [
        {
          "word": "mechanic"
        }
      ],
      "id": "en-card_mechanic-en-noun-jBtN-87F",
      "links": [
        [
          "cardsharp",
          "cardsharp"
        ]
      ]
    }
  ],
  "word": "card mechanic"
}

{
  "forms": [
    {
      "form": "card mechanics",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "card mechanic (plural card mechanics)",
      "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 terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2007, Gordon Donnell, The Only Game in Town",
          "text": "Card mechanics practice bottom dealing in front of a mirror until it becomes so natural they can't see themselves cheat.",
          "type": "quotation"
        },
        {
          "ref": "2010, William Harrison, The Mutations of Rollerball: Essays, page 48",
          "text": "The rights to Titanic's story is owned by the gambler's son—a card mechanic of some repute himself—and these rights have been sold recently to a dentist in Dallas who teamed up with an advertising executive from Fort Worth […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A cardsharp."
      ],
      "hyponyms": [
        {
          "word": "mechanic"
        }
      ],
      "links": [
        [
          "cardsharp",
          "cardsharp"
        ]
      ]
    }
  ],
  "word": "card mechanic"
}