"CR7" meaning in English

{
  "etymology_text": "From Cristiano Ronaldo's initials (CR) and his playing number (7).",
  "head_templates": [
    {
      "args": {},
      "expansion": "CR7",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Football (soccer)",
          "orig": "en:Football (soccer)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Nicknames of individuals",
          "orig": "en:Nicknames of individuals",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Sports nicknames",
          "orig": "en:Sports nicknames",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Cristiano Ronaldo (a Portuguese footballer)"
      ],
      "id": "en-CR7-en-name-gjWUvvAt",
      "links": [
        [
          "soccer",
          "soccer"
        ]
      ],
      "raw_glosses": [
        "(soccer) Cristiano Ronaldo (a Portuguese footballer)"
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "soccer",
        "sports"
      ]
    }
  ],
  "word": "CR7"
}

{
  "etymology_text": "From Cristiano Ronaldo's initials (CR) and his playing number (7).",
  "head_templates": [
    {
      "args": {},
      "expansion": "CR7",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English proper nouns",
        "English terms spelled with numbers",
        "English uncountable nouns",
        "English words without vowels",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Football (soccer)",
        "en:Nicknames of individuals",
        "en:Sports nicknames"
      ],
      "glosses": [
        "Cristiano Ronaldo (a Portuguese footballer)"
      ],
      "links": [
        [
          "soccer",
          "soccer"
        ]
      ],
      "raw_glosses": [
        "(soccer) Cristiano Ronaldo (a Portuguese footballer)"
      ],
      "topics": [
        "ball-games",
        "games",
        "hobbies",
        "lifestyle",
        "soccer",
        "sports"
      ]
    }
  ],
  "word": "CR7"
}