"Brunnian link" meaning in English

{
  "etymology_text": "Named after Hermann Brunn, whose 1892 article Über Verkettung included examples of such links.",
  "forms": [
    {
      "form": "Brunnian links",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Brunnian link (plural Brunnian links)",
      "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"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Topology",
          "orig": "en:Topology",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A nontrivial link that becomes a set of trivial unlinked circles if any one component is removed. In other words, cutting any loop frees all the other loops."
      ],
      "id": "en-Brunnian_link-en-noun-hiu2jToK",
      "links": [
        [
          "topology",
          "topology"
        ],
        [
          "link",
          "link"
        ],
        [
          "unlinked",
          "unlinked"
        ],
        [
          "circle",
          "circle"
        ],
        [
          "component",
          "component"
        ]
      ],
      "raw_glosses": [
        "(topology) A nontrivial link that becomes a set of trivial unlinked circles if any one component is removed. In other words, cutting any loop frees all the other loops."
      ],
      "topics": [
        "mathematics",
        "sciences",
        "topology"
      ],
      "wikipedia": [
        "Brunnian link"
      ]
    }
  ],
  "word": "Brunnian link"
}

{
  "etymology_text": "Named after Hermann Brunn, whose 1892 article Über Verkettung included examples of such links.",
  "forms": [
    {
      "form": "Brunnian links",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Brunnian link (plural Brunnian links)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Topology"
      ],
      "glosses": [
        "A nontrivial link that becomes a set of trivial unlinked circles if any one component is removed. In other words, cutting any loop frees all the other loops."
      ],
      "links": [
        [
          "topology",
          "topology"
        ],
        [
          "link",
          "link"
        ],
        [
          "unlinked",
          "unlinked"
        ],
        [
          "circle",
          "circle"
        ],
        [
          "component",
          "component"
        ]
      ],
      "raw_glosses": [
        "(topology) A nontrivial link that becomes a set of trivial unlinked circles if any one component is removed. In other words, cutting any loop frees all the other loops."
      ],
      "topics": [
        "mathematics",
        "sciences",
        "topology"
      ],
      "wikipedia": [
        "Brunnian link"
      ]
    }
  ],
  "word": "Brunnian link"
}