"self-killing" meaning in English

{
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        "2": "self-kill",
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  "etymology_text": "self-kill + -ing",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
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          "_dis": "3 97",
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      "form_of": [
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          "word": "self-kill"
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        "present participle and gerund of self-kill"
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      "id": "en-self-killing-en-verb-pksZlfUV",
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        [
          "self-kill",
          "self-kill#English"
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  "word": "self-killing"
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  "etymology_number": 2,
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  ],
  "etymology_text": "self- + killing",
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      "form": "self-killings",
      "tags": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "The killing of oneself; suicide."
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          "killing"
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  "word": "self-killing"
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  "etymology_text": "self-kill + -ing",
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  "lang_code": "en",
  "pos": "verb",
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          "self-kill#English"
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  "word": "self-killing"
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  "etymology_text": "self- + killing",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
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        "The killing of oneself; suicide."
      ],
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          "killing",
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  "word": "self-killing"
}