"probability box" meaning in English

{
  "forms": [
    {
      "form": "probability boxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "probability box (plural probability boxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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": "Probability theory",
          "orig": "en:Probability theory",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A quantitative characterization of an imperfectly known probability distribution."
      ],
      "id": "en-probability_box-en-noun-CN17i16F",
      "links": [
        [
          "probability theory",
          "probability theory"
        ],
        [
          "probability distribution",
          "probability distribution"
        ]
      ],
      "raw_glosses": [
        "(probability theory) A quantitative characterization of an imperfectly known probability distribution."
      ],
      "synonyms": [
        {
          "word": "p-box"
        }
      ],
      "topics": [
        "mathematics",
        "probability-theory",
        "sciences"
      ],
      "wikipedia": [
        "probability box"
      ]
    }
  ],
  "word": "probability box"
}

{
  "forms": [
    {
      "form": "probability boxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "probability box (plural probability boxes)",
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Probability theory"
      ],
      "glosses": [
        "A quantitative characterization of an imperfectly known probability distribution."
      ],
      "links": [
        [
          "probability theory",
          "probability theory"
        ],
        [
          "probability distribution",
          "probability distribution"
        ]
      ],
      "raw_glosses": [
        "(probability theory) A quantitative characterization of an imperfectly known probability distribution."
      ],
      "synonyms": [
        {
          "word": "p-box"
        }
      ],
      "topics": [
        "mathematics",
        "probability-theory",
        "sciences"
      ],
      "wikipedia": [
        "probability box"
      ]
    }
  ],
  "word": "probability box"
}