"flatliner" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "flatline",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "flatline + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From flatline + -er.",
  "forms": [
    {
      "form": "flatliners",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flatliner (plural flatliners)",
      "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",
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          "source": "w"
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          "parents": [],
          "source": "w"
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          "parents": [],
          "source": "w"
        },
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          "parents": [],
          "source": "w"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1996, Bill Butterworth, Butterworth gets his life together, page 144:",
          "text": "[…]unless my heart stops, okay? Nada — unless I'm a flatliner.\"",
          "type": "quote"
        },
        {
          "ref": "1998, George Mckinney, Cross the Line:",
          "text": "In spite of his dramatic highs and the canyon lows, Kurt was a flatliner—a patient with no heartbeat.",
          "type": "quote"
        },
        {
          "ref": "2011, Laurence Street, Introduction to Biomedical Engineering Technology, page 125:",
          "text": "Though occasionally a “flatliner” can be revived with a defib, it is most commonly used to change the uncoordinated contractions of the heart (fibrillation) into a normal sinus rhythm—that is, to defibrillate the heart.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A patient with no heartbeat."
      ],
      "id": "en-flatliner-en-noun-mysmuBTW",
      "links": [
        [
          "patient",
          "patient"
        ],
        [
          "heartbeat",
          "heartbeat"
        ]
      ],
      "raw_glosses": [
        "(rare) A patient with no heartbeat."
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "word": "flatliner"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "flatline",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "flatline + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From flatline + -er.",
  "forms": [
    {
      "form": "flatliners",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flatliner (plural flatliners)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English entries with incorrect language header",
        "English lemmas",
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        "English terms suffixed with -er (agent noun)",
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        "English terms with rare senses",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:People"
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      "examples": [
        {
          "ref": "1996, Bill Butterworth, Butterworth gets his life together, page 144:",
          "text": "[…]unless my heart stops, okay? Nada — unless I'm a flatliner.\"",
          "type": "quote"
        },
        {
          "ref": "1998, George Mckinney, Cross the Line:",
          "text": "In spite of his dramatic highs and the canyon lows, Kurt was a flatliner—a patient with no heartbeat.",
          "type": "quote"
        },
        {
          "ref": "2011, Laurence Street, Introduction to Biomedical Engineering Technology, page 125:",
          "text": "Though occasionally a “flatliner” can be revived with a defib, it is most commonly used to change the uncoordinated contractions of the heart (fibrillation) into a normal sinus rhythm—that is, to defibrillate the heart.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A patient with no heartbeat."
      ],
      "links": [
        [
          "patient",
          "patient"
        ],
        [
          "heartbeat",
          "heartbeat"
        ]
      ],
      "raw_glosses": [
        "(rare) A patient with no heartbeat."
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "word": "flatliner"
}