"kill-off" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "kill off"
      },
      "expansion": "Deverbal from kill off",
      "name": "deverbal"
    }
  ],
  "etymology_text": "Deverbal from kill off.",
  "forms": [
    {
      "form": "kill-offs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "kill-off (plural kill-offs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English deverbals",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English links with manual fragments",
          "parents": [
            "Links with manual fragments",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "a mass kill-off of marine organisms"
        }
      ],
      "glosses": [
        "The process of killing something off; an elimination."
      ],
      "id": "en-kill-off-en-noun-MyCjHi7z",
      "links": [
        [
          "elimination",
          "elimination"
        ]
      ],
      "related": [
        {
          "tags": [
            "noun"
          ],
          "word": "die-off"
        }
      ]
    }
  ],
  "word": "kill-off"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "kill off"
      },
      "expansion": "Deverbal from kill off",
      "name": "deverbal"
    }
  ],
  "etymology_text": "Deverbal from kill off.",
  "forms": [
    {
      "form": "kill-offs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "kill-off (plural kill-offs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "tags": [
        "noun"
      ],
      "word": "die-off"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English deverbals",
        "English entries with incorrect language header",
        "English lemmas",
        "English links with manual fragments",
        "English multiword terms",
        "English nouns"
      ],
      "examples": [
        {
          "text": "a mass kill-off of marine organisms"
        }
      ],
      "glosses": [
        "The process of killing something off; an elimination."
      ],
      "links": [
        [
          "elimination",
          "elimination"
        ]
      ]
    }
  ],
  "word": "kill-off"
}