"rookie card" meaning in English

{
  "forms": [
    {
      "form": "rookie cards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rookie card (plural rookie cards)",
      "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": "topical",
          "langcode": "en",
          "name": "Collectible card games",
          "orig": "en:Collectible card games",
          "parents": [
            "Card games",
            "Games",
            "Recreation",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A sports card that is the first to feature an athlete after that athlete has participated in the highest level of competition within his or her sport."
      ],
      "id": "en-rookie_card-en-noun-lWrlocji",
      "links": [
        [
          "sports card",
          "sports card"
        ],
        [
          "athlete",
          "athlete"
        ],
        [
          "participate",
          "participate"
        ],
        [
          "competition",
          "competition"
        ],
        [
          "sport",
          "sport"
        ]
      ],
      "qualifier": "collectible card games",
      "raw_glosses": [
        "(collectible card games) A sports card that is the first to feature an athlete after that athlete has participated in the highest level of competition within his or her sport."
      ]
    }
  ],
  "word": "rookie card"
}

{
  "forms": [
    {
      "form": "rookie cards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rookie card (plural rookie cards)",
      "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",
        "en:Collectible card games"
      ],
      "glosses": [
        "A sports card that is the first to feature an athlete after that athlete has participated in the highest level of competition within his or her sport."
      ],
      "links": [
        [
          "sports card",
          "sports card"
        ],
        [
          "athlete",
          "athlete"
        ],
        [
          "participate",
          "participate"
        ],
        [
          "competition",
          "competition"
        ],
        [
          "sport",
          "sport"
        ]
      ],
      "qualifier": "collectible card games",
      "raw_glosses": [
        "(collectible card games) A sports card that is the first to feature an athlete after that athlete has participated in the highest level of competition within his or her sport."
      ]
    }
  ],
  "word": "rookie card"
}