"communication cord" meaning in English

{
  "forms": [
    {
      "form": "communication cords",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "communication cord (plural communication cords)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1959 March, “The 2,500 h.p. electric locomotives for the Kent Coast electrification”, in Trains Illustrated, page 125",
          "text": "Although the pyrotechnics should be slightly dimmed as the shoes become run in, one feels that they may still be strong enough to tempt some nervous passengers in the leading coach of a boat train to reach for the communication cord.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of emergency cord."
      ],
      "id": "en-communication_cord-en-noun-n2w0WiAP",
      "links": [
        [
          "emergency cord",
          "emergency cord#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "emergency cord"
        }
      ]
    }
  ],
  "word": "communication cord"
}

{
  "forms": [
    {
      "form": "communication cords",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "communication cord (plural communication cords)",
      "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",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1959 March, “The 2,500 h.p. electric locomotives for the Kent Coast electrification”, in Trains Illustrated, page 125",
          "text": "Although the pyrotechnics should be slightly dimmed as the shoes become run in, one feels that they may still be strong enough to tempt some nervous passengers in the leading coach of a boat train to reach for the communication cord.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of emergency cord."
      ],
      "links": [
        [
          "emergency cord",
          "emergency cord#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "emergency cord"
        }
      ]
    }
  ],
  "word": "communication cord"
}