"Reuleaux triangle" meaning in English

{
  "etymology_text": "Named after Franz Reuleaux, 19th-century German engineer, who used Reuleaux triangles in his machine designs.",
  "forms": [
    {
      "form": "Reuleaux triangles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Reuleaux triangle (plural Reuleaux triangles)",
      "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"
        },
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          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
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          "parents": [
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Geometry",
          "orig": "en:Geometry",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A figure consisting of three circular arcs, each centered on the intersection of the other two."
      ],
      "id": "en-Reuleaux_triangle-en-noun-2wBLQTPx",
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "figure",
          "figure"
        ],
        [
          "circular",
          "circular"
        ],
        [
          "arc",
          "arc"
        ],
        [
          "center",
          "center"
        ],
        [
          "intersection",
          "intersection"
        ]
      ],
      "raw_glosses": [
        "(geometry) A figure consisting of three circular arcs, each centered on the intersection of the other two."
      ],
      "related": [
        {
          "word": "Reuleaux polygon"
        },
        {
          "word": "Reuleaux rotor"
        }
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "figure consisting of three circular arcs",
          "word": "Reuleaux’n kolmio"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "figure consisting of three circular arcs",
          "word": "triangle de Reuleaux"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "treugólʹnik Rjoló",
          "sense": "figure consisting of three circular arcs",
          "tags": [
            "masculine"
          ],
          "word": "треуго́льник Рёло́"
        }
      ],
      "wikipedia": [
        "Reuleaux triangle"
      ]
    }
  ],
  "word": "Reuleaux triangle"
}

{
  "etymology_text": "Named after Franz Reuleaux, 19th-century German engineer, who used Reuleaux triangles in his machine designs.",
  "forms": [
    {
      "form": "Reuleaux triangles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Reuleaux triangle (plural Reuleaux triangles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Reuleaux polygon"
    },
    {
      "word": "Reuleaux rotor"
    }
  ],
  "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:Geometry"
      ],
      "glosses": [
        "A figure consisting of three circular arcs, each centered on the intersection of the other two."
      ],
      "links": [
        [
          "geometry",
          "geometry"
        ],
        [
          "figure",
          "figure"
        ],
        [
          "circular",
          "circular"
        ],
        [
          "arc",
          "arc"
        ],
        [
          "center",
          "center"
        ],
        [
          "intersection",
          "intersection"
        ]
      ],
      "raw_glosses": [
        "(geometry) A figure consisting of three circular arcs, each centered on the intersection of the other two."
      ],
      "topics": [
        "geometry",
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Reuleaux triangle"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "figure consisting of three circular arcs",
      "word": "Reuleaux’n kolmio"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "figure consisting of three circular arcs",
      "word": "triangle de Reuleaux"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "treugólʹnik Rjoló",
      "sense": "figure consisting of three circular arcs",
      "tags": [
        "masculine"
      ],
      "word": "треуго́льник Рёло́"
    }
  ],
  "word": "Reuleaux triangle"
}