"call button" meaning in English

{
  "forms": [
    {
      "form": "call buttons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "call button (plural call buttons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "ref": "2008 April 17, Joyce Wadler, “Don’t Hate Me Because I’m Solvent”, in The New York Times",
          "text": "Their feeling, anachronistic as the servants’ call button in their dining room, is that if you don’t have the money for something, you don’t buy it.",
          "type": "quotation"
        },
        {
          "ref": "2013 April 4, Celine Gounder, “Medical Emergencies at 40,000 Feet”, in The Atlantic",
          "text": "I was asleep, the plane dark as we flew over the Atlantic on our way from Johannesburg to São Paulo, when a familiar page came over the intercom: \"Ladies and gentlemen, sorry to wake you. If there is a doctor on board, please hit your call button.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A button used to request assistance."
      ],
      "id": "en-call_button-en-noun--UhmniC9",
      "links": [
        [
          "button",
          "button"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "33 59 8",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "2021 February 26, Hannah Eason, “Richmond to install new traffic signals for pedestrians, bicyclists at crosswalks”, in NBC 12, Richmond, Va.: WWBT",
          "text": "The Pedestrian Hybrid Beacon is designed to help pedestrians and bicyclists safely cross busy, multi-lane or high-speed streets. The beacon consists of two red lenses above a single yellow lens. The lenses remain “dark” until a pedestrian pushes the call button to activate the beacon.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A button used to request some form of mechanical service.",
        "A button used to request a walk signal at a pedestrian crossing."
      ],
      "id": "en-call_button-en-noun-F6IY2GYf",
      "links": [
        [
          "button",
          "button"
        ]
      ],
      "synonyms": [
        {
          "_dis1": "26 49 25",
          "sense": "walk signal button",
          "word": "beg button"
        }
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "ref": "2000 June 11, Mark Wallace, “Tech 2010: #29 Wait No More; The Elevator You Never Have to Wait For”, in The New York Times, section 6, page 96",
          "text": "No more staring at closed elevator doors, repeatedly pressing a call button in frustration.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A button used to request some form of mechanical service.",
        "A button used to summon an elevator."
      ],
      "id": "en-call_button-en-noun-o~S9F-1z",
      "links": [
        [
          "button",
          "button"
        ]
      ]
    }
  ],
  "word": "call button"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "call buttons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "call button (plural call buttons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2008 April 17, Joyce Wadler, “Don’t Hate Me Because I’m Solvent”, in The New York Times",
          "text": "Their feeling, anachronistic as the servants’ call button in their dining room, is that if you don’t have the money for something, you don’t buy it.",
          "type": "quotation"
        },
        {
          "ref": "2013 April 4, Celine Gounder, “Medical Emergencies at 40,000 Feet”, in The Atlantic",
          "text": "I was asleep, the plane dark as we flew over the Atlantic on our way from Johannesburg to São Paulo, when a familiar page came over the intercom: \"Ladies and gentlemen, sorry to wake you. If there is a doctor on board, please hit your call button.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A button used to request assistance."
      ],
      "links": [
        [
          "button",
          "button"
        ]
      ]
    },
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2021 February 26, Hannah Eason, “Richmond to install new traffic signals for pedestrians, bicyclists at crosswalks”, in NBC 12, Richmond, Va.: WWBT",
          "text": "The Pedestrian Hybrid Beacon is designed to help pedestrians and bicyclists safely cross busy, multi-lane or high-speed streets. The beacon consists of two red lenses above a single yellow lens. The lenses remain “dark” until a pedestrian pushes the call button to activate the beacon.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A button used to request some form of mechanical service.",
        "A button used to request a walk signal at a pedestrian crossing."
      ],
      "links": [
        [
          "button",
          "button"
        ]
      ]
    },
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2000 June 11, Mark Wallace, “Tech 2010: #29 Wait No More; The Elevator You Never Have to Wait For”, in The New York Times, section 6, page 96",
          "text": "No more staring at closed elevator doors, repeatedly pressing a call button in frustration.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A button used to request some form of mechanical service.",
        "A button used to summon an elevator."
      ],
      "links": [
        [
          "button",
          "button"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "walk signal button",
      "word": "beg button"
    }
  ],
  "word": "call button"
}