"blue boxing" meaning in English

{
  "forms": [
    {
      "form": "blue boxings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blue boxing (plural blue boxings)",
      "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": "Telephony",
          "orig": "en:Telephony",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "See also: blue box"
        }
      ],
      "glosses": [
        "An early 1970s phreaking technique involving electronic devices, famously built by Steve Wozniak and marketed by Steve Jobs, that simulated the 2600Hz tone used by telephone operators, allowing users to seize control of trunk lines, bypassing billing systems to make free, long-distance, or international calls."
      ],
      "id": "en-blue_boxing-en-noun-llT~iL0N",
      "links": [
        [
          "1970s",
          "1970s"
        ],
        [
          "phreaking",
          "phreaking"
        ],
        [
          "Hz",
          "Hz"
        ],
        [
          "trunk line",
          "trunk line"
        ]
      ]
    }
  ],
  "word": "blue boxing"
}

{
  "forms": [
    {
      "form": "blue boxings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blue boxing (plural blue boxings)",
      "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:Telephony"
      ],
      "examples": [
        {
          "text": "See also: blue box"
        }
      ],
      "glosses": [
        "An early 1970s phreaking technique involving electronic devices, famously built by Steve Wozniak and marketed by Steve Jobs, that simulated the 2600Hz tone used by telephone operators, allowing users to seize control of trunk lines, bypassing billing systems to make free, long-distance, or international calls."
      ],
      "links": [
        [
          "1970s",
          "1970s"
        ],
        [
          "phreaking",
          "phreaking"
        ],
        [
          "Hz",
          "Hz"
        ],
        [
          "trunk line",
          "trunk line"
        ]
      ]
    }
  ],
  "word": "blue boxing"
}