"黒電話" meaning in Japanese

{
  "forms": [
    {
      "form": "黒電話",
      "ruby": [
        [
          "黒",
          "くろ"
        ],
        [
          "電",
          "でん"
        ],
        [
          "話",
          "わ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kurodenwa",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "くろでんわ"
      },
      "expansion": "黒(くろ)電(でん)話(わ) • (kurodenwa)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "53 47",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "Japanese terms with 3 kanji",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "95 5",
          "kind": "topical",
          "langcode": "ja",
          "name": "Telephony",
          "orig": "ja:Telephony",
          "parents": [
            "Electronics",
            "Telecommunications",
            "Technology",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "rotary dial telephone"
      ],
      "id": "en-黒電話-ja-noun-OD3uOfTj",
      "links": [
        [
          "rotary dial",
          "rotary dial"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "53 47",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "34 66",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "35 65",
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "34 66",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "35 65",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "15 85",
          "kind": "topical",
          "langcode": "ja",
          "name": "Individuals",
          "orig": "ja:Individuals",
          "parents": [
            "People",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "0 100",
          "kind": "place",
          "langcode": "ja",
          "name": "North Korea",
          "orig": "ja:North Korea",
          "parents": [
            "Asia",
            "Korea",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Kim Jong-un"
      ],
      "id": "en-黒電話-ja-noun-lt91mRlF",
      "raw_glosses": [
        "(slang) Kim Jong-un"
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kɯ̟ɾo̞dẽ̞ɰ̃β̞a̠]"
    }
  ],
  "wikipedia": [
    "ja:黒電話"
  ],
  "word": "黒電話"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese lemmas",
    "Japanese links with redundant wikilinks",
    "Japanese nouns",
    "Japanese terms spelled with second grade kanji",
    "Japanese terms with 3 kanji",
    "Japanese terms with IPA pronunciation",
    "Japanese terms with IPA pronunciation missing pitch accent",
    "Japanese terms with non-redundant non-automated sortkeys",
    "Japanese terms with redundant sortkeys",
    "Pages with 1 entry",
    "ja:Individuals",
    "ja:North Korea",
    "ja:Telephony"
  ],
  "forms": [
    {
      "form": "黒電話",
      "ruby": [
        [
          "黒",
          "くろ"
        ],
        [
          "電",
          "でん"
        ],
        [
          "話",
          "わ"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "kurodenwa",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "くろでんわ"
      },
      "expansion": "黒(くろ)電(でん)話(わ) • (kurodenwa)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "rotary dial telephone"
      ],
      "links": [
        [
          "rotary dial",
          "rotary dial"
        ]
      ]
    },
    {
      "categories": [
        "Japanese slang"
      ],
      "glosses": [
        "Kim Jong-un"
      ],
      "raw_glosses": [
        "(slang) Kim Jong-un"
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kɯ̟ɾo̞dẽ̞ɰ̃β̞a̠]"
    }
  ],
  "wikipedia": [
    "ja:黒電話"
  ],
  "word": "黒電話"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "黒電話"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "黒電話",
  "trace": ""
}