"king card" meaning in English

{
  "forms": [
    {
      "form": "king cards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "king card (plural king cards)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "parents": [],
          "source": "w"
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          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Card games",
          "orig": "en:Card games",
          "parents": [
            "Games",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "If the ace and king of a suit have been played, the queen is the king card of the suit.",
          "type": "example"
        }
      ],
      "glosses": [
        "In whist, the best unplayed card of a suit."
      ],
      "id": "en-king_card-en-noun-fGf-1AaT",
      "links": [
        [
          "card game",
          "card game"
        ],
        [
          "whist",
          "whist"
        ],
        [
          "unplayed",
          "unplayed"
        ],
        [
          "card",
          "card"
        ],
        [
          "suit",
          "suit"
        ]
      ],
      "raw_glosses": [
        "(card games) In whist, the best unplayed card of a suit."
      ],
      "topics": [
        "card-games",
        "games"
      ]
    }
  ],
  "word": "king card"
}

{
  "forms": [
    {
      "form": "king cards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "king card (plural king cards)",
      "name": "en-noun"
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  "lang_code": "en",
  "pos": "noun",
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        "English countable nouns",
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      ],
      "examples": [
        {
          "text": "If the ace and king of a suit have been played, the queen is the king card of the suit.",
          "type": "example"
        }
      ],
      "glosses": [
        "In whist, the best unplayed card of a suit."
      ],
      "links": [
        [
          "card game",
          "card game"
        ],
        [
          "whist",
          "whist"
        ],
        [
          "unplayed",
          "unplayed"
        ],
        [
          "card",
          "card"
        ],
        [
          "suit",
          "suit"
        ]
      ],
      "raw_glosses": [
        "(card games) In whist, the best unplayed card of a suit."
      ],
      "topics": [
        "card-games",
        "games"
      ]
    }
  ],
  "word": "king card"
}