"Feistel network" meaning in English

{
  "forms": [
    {
      "form": "Feistel networks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Feistel network (plural Feistel networks)",
      "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"
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          "source": "w"
        },
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          "parents": [
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          "source": "w"
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          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
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      ],
      "glosses": [
        "Synonym of Feistel cipher"
      ],
      "id": "en-Feistel_network-en-noun-s4bjJxrA",
      "links": [
        [
          "Feistel cipher",
          "Feistel cipher#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Feistel cipher"
        }
      ]
    }
  ],
  "word": "Feistel network"
}

{
  "forms": [
    {
      "form": "Feistel networks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Feistel network (plural Feistel networks)",
      "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"
      ],
      "glosses": [
        "Synonym of Feistel cipher"
      ],
      "links": [
        [
          "Feistel cipher",
          "Feistel cipher#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "Feistel cipher"
        }
      ]
    }
  ],
  "word": "Feistel network"
}