".500" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "name": "Sports",
          "orig": "en:Sports",
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      "examples": [
        {
          "text": "The Chicago Cubs finished ten games over .500, but still didn't make the playoffs.",
          "type": "example"
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      "glosses": [
        "An equal number of wins and losses."
      ],
      "id": "en-.500-en-noun-wXju~4kE",
      "links": [
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      "raw_glosses": [
        "(sports) An equal number of wins and losses."
      ],
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        "uncountable"
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      "topics": [
        "hobbies",
        "lifestyle",
        "sports"
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  "word": ".500"
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  "lang_code": "en",
  "pos": "noun",
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          "text": "The Chicago Cubs finished ten games over .500, but still didn't make the playoffs.",
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        "An equal number of wins and losses."
      ],
      "links": [
        [
          "sports",
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      ],
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        "(sports) An equal number of wins and losses."
      ],
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        "hobbies",
        "lifestyle",
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  "word": ".500"
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