"purple death" meaning in English

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  "etymology_text": "From purple + death.\nFrom cyanosis due to difficulty breathing, which would turn the skin purple.",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Synonym of Spanish influenza"
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        "(pathology, historical, dated) Synonym of Spanish influenza"
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      "topics": [
        "medicine",
        "pathology",
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    }
  ],
  "word": "purple death"
}

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  "etymology_text": "From purple + death.\nFrom cyanosis due to difficulty breathing, which would turn the skin purple.",
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