"death on" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
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      "examples": [
        {
          "ref": "1901, Evelyn Raymond, The Sun Maid: A Story of Fort Dearborn",
          "text": "She's death on the fashion, Mercy is. Why, that last gown of hers, cut out a piece of calico a neighbor brought from the East—you'd ought to see it.",
          "type": "quotation"
        },
        {
          "ref": "1913, Robert Blatchford, Tommy Atkins of the Ramchunders, page 106",
          "text": "She's a Canadian half-breed, and she has a sweet tooth and a bitter tongue. The only joys that lighten her dusty pilgrimage through this vale of tears are eating candy and giving cheek to her superior officer. She's death on candy, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Very keen on or good at (something)."
      ],
      "id": "en-death_on-en-phrase-WyYqsoF-",
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          "keen",
          "keen"
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          "good",
          "good"
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      "raw_glosses": [
        "(colloquial) Very keen on or good at (something)."
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "word": "death on"
}

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  "lang_code": "en",
  "pos": "phrase",
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        "Quotation templates to be cleaned"
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      "examples": [
        {
          "ref": "1901, Evelyn Raymond, The Sun Maid: A Story of Fort Dearborn",
          "text": "She's death on the fashion, Mercy is. Why, that last gown of hers, cut out a piece of calico a neighbor brought from the East—you'd ought to see it.",
          "type": "quotation"
        },
        {
          "ref": "1913, Robert Blatchford, Tommy Atkins of the Ramchunders, page 106",
          "text": "She's a Canadian half-breed, and she has a sweet tooth and a bitter tongue. The only joys that lighten her dusty pilgrimage through this vale of tears are eating candy and giving cheek to her superior officer. She's death on candy, […]",
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      ],
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        "Very keen on or good at (something)."
      ],
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        [
          "keen",
          "keen"
        ],
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          "good",
          "good"
        ]
      ],
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        "(colloquial) Very keen on or good at (something)."
      ],
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  ],
  "word": "death on"
}