"death flag" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "死亡フラグ",
        "tr": "shibō furagu"
      },
      "expansion": "Calque of Japanese 死亡フラグ (shibō furagu)",
      "name": "calque"
    }
  ],
  "etymology_text": "Calque of Japanese 死亡フラグ (shibō furagu).",
  "forms": [
    {
      "form": "death flags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "death flag (plural death flags)",
      "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"
        }
      ],
      "glosses": [
        "A trope suggesting to the viewer that a character will die."
      ],
      "id": "en-death_flag-en-noun-C9SudjGj",
      "links": [
        [
          "fandom",
          "fandom"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "trope",
          "trope"
        ],
        [
          "viewer",
          "viewer"
        ],
        [
          "character",
          "character"
        ],
        [
          "die",
          "die"
        ]
      ],
      "raw_glosses": [
        "(fandom slang, chiefly Japanese media) A trope suggesting to the viewer that a character will die."
      ],
      "tags": [
        "Japanese",
        "slang"
      ],
      "topics": [
        "lifestyle",
        "media"
      ]
    }
  ],
  "word": "death flag"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "死亡フラグ",
        "tr": "shibō furagu"
      },
      "expansion": "Calque of Japanese 死亡フラグ (shibō furagu)",
      "name": "calque"
    }
  ],
  "etymology_text": "Calque of Japanese 死亡フラグ (shibō furagu).",
  "forms": [
    {
      "form": "death flags",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "death flag (plural death flags)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English fandom slang",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms calqued from Japanese",
        "English terms derived from Japanese"
      ],
      "glosses": [
        "A trope suggesting to the viewer that a character will die."
      ],
      "links": [
        [
          "fandom",
          "fandom"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "trope",
          "trope"
        ],
        [
          "viewer",
          "viewer"
        ],
        [
          "character",
          "character"
        ],
        [
          "die",
          "die"
        ]
      ],
      "raw_glosses": [
        "(fandom slang, chiefly Japanese media) A trope suggesting to the viewer that a character will die."
      ],
      "tags": [
        "Japanese",
        "slang"
      ],
      "topics": [
        "lifestyle",
        "media"
      ]
    }
  ],
  "word": "death flag"
}