"nuclear poison" meaning in English

{
  "forms": [
    {
      "form": "nuclear poisons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "nuclear poison (plural nuclear poisons)",
      "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",
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          "source": "w"
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          "source": "w"
        },
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Materials",
          "orig": "en:Materials",
          "parents": [
            "Manufacturing",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Neutron",
          "orig": "en:Neutron",
          "parents": [
            "Nuclear physics",
            "Physics",
            "Quantum mechanics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nuclear energy",
          "orig": "en:Nuclear energy",
          "parents": [
            "Energy",
            "Nuclear physics",
            "Technology",
            "Nature",
            "Physics",
            "Quantum mechanics",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nuclear physics",
          "orig": "en:Nuclear physics",
          "parents": [
            "Physics",
            "Quantum mechanics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Something that absorbs neutrons very well, hence sabotaging a nuclear chain reaction"
      ],
      "id": "en-nuclear_poison-en-noun-ha5JRZOQ",
      "links": [
        [
          "chain reaction",
          "chain reaction"
        ]
      ],
      "synonyms": [
        {
          "word": "neutron poison"
        }
      ],
      "wikipedia": [
        "nuclear poison"
      ]
    }
  ],
  "word": "nuclear poison"
}

{
  "forms": [
    {
      "form": "nuclear poisons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "nuclear poison (plural nuclear poisons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Materials",
        "en:Neutron",
        "en:Nuclear energy",
        "en:Nuclear physics"
      ],
      "glosses": [
        "Something that absorbs neutrons very well, hence sabotaging a nuclear chain reaction"
      ],
      "links": [
        [
          "chain reaction",
          "chain reaction"
        ]
      ],
      "wikipedia": [
        "nuclear poison"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "neutron poison"
    }
  ],
  "word": "nuclear poison"
}