"sail curve" meaning in English

{
  "forms": [
    {
      "form": "sail curves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sail curve (plural sail curves)",
      "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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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geometry",
          "orig": "en:Geometry",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
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        }
      ],
      "glosses": [
        "A catenary-generated curve in the form of a cross-section of a sail filled by wind."
      ],
      "id": "en-sail_curve-en-noun-ztqpN70j",
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "catenary",
          "catenary"
        ],
        [
          "cross-section",
          "cross-section"
        ],
        [
          "wind",
          "wind"
        ]
      ],
      "raw_glosses": [
        "(geometry) A catenary-generated curve in the form of a cross-section of a sail filled by wind."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "sail curve"
}

{
  "forms": [
    {
      "form": "sail curves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sail curve (plural sail curves)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "en:Geometry"
      ],
      "glosses": [
        "A catenary-generated curve in the form of a cross-section of a sail filled by wind."
      ],
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "catenary",
          "catenary"
        ],
        [
          "cross-section",
          "cross-section"
        ],
        [
          "wind",
          "wind"
        ]
      ],
      "raw_glosses": [
        "(geometry) A catenary-generated curve in the form of a cross-section of a sail filled by wind."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "sail curve"
}