"sigmoid flexure" meaning in English

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  "forms": [
    {
      "form": "sigmoid flexures",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sigmoid flexure (plural sigmoid flexures)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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      "glosses": [
        "sigmoid colon"
      ],
      "id": "en-sigmoid_flexure-en-noun-tC1eu8DY",
      "links": [
        [
          "sigmoid colon",
          "sigmoid colon"
        ]
      ]
    }
  ],
  "word": "sigmoid flexure"
}

{
  "forms": [
    {
      "form": "sigmoid flexures",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sigmoid flexure (plural sigmoid flexures)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English multiword terms",
        "English nouns",
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      ],
      "glosses": [
        "sigmoid colon"
      ],
      "links": [
        [
          "sigmoid colon",
          "sigmoid colon"
        ]
      ]
    }
  ],
  "word": "sigmoid flexure"
}