"J. Random" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
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            "Technology",
            "All topics",
            "Fundamental"
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      "examples": [
        {
          "text": "J. Random User"
        },
        {
          "text": "J. Random Hacker"
        }
      ],
      "glosses": [
        "An unspecified person; any old person (followed by a generic role)."
      ],
      "id": "en-J._Random-en-name-cvyUrKSt",
      "links": [
        [
          "computing",
          "computing#Noun"
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        [
          "any old",
          "any old"
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      "raw_glosses": [
        "(computing, slang) An unspecified person; any old person (followed by a generic role)."
      ],
      "related": [
        {
          "word": "J. Random User"
        },
        {
          "word": "John Doe"
        },
        {
          "word": "Jane Doe"
        },
        {
          "word": "so-and-so"
        },
        {
          "word": "what's-his-name"
        },
        {
          "word": "you-know-who"
        }
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
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  "word": "J. Random"
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  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "J. Random User"
    },
    {
      "word": "John Doe"
    },
    {
      "word": "Jane Doe"
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      "examples": [
        {
          "text": "J. Random User"
        },
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          "text": "J. Random Hacker"
        }
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      "glosses": [
        "An unspecified person; any old person (followed by a generic role)."
      ],
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        [
          "computing",
          "computing#Noun"
        ],
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          "any old",
          "any old"
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        "(computing, slang) An unspecified person; any old person (followed by a generic role)."
      ],
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        "slang"
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      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
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