"rotula" meaning in English

{
  "derived": [
    {
      "_dis1": "0 0",
      "word": "rotular"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "rotula"
      },
      "expansion": "Learned borrowing from Latin rotula",
      "name": "lbor"
    },
    {
      "args": {
        "1": "en",
        "2": "role",
        "3": "roll"
      },
      "expansion": "Doublet of role and roll",
      "name": "dbt"
    }
  ],
  "etymology_text": "Learned borrowing from Latin rotula. Doublet of role and roll.",
  "forms": [
    {
      "form": "rotulas",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "rotulae",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "rotulae"
      },
      "expansion": "rotula (plural rotulas or rotulae)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Skeleton",
          "orig": "en:Skeleton",
          "parents": [
            "Body parts",
            "Body",
            "Anatomy",
            "Human",
            "Biology",
            "Medicine",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The patella; the kneecap."
      ],
      "id": "en-rotula-en-noun-qYvT8ccX",
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "patella",
          "patella"
        ],
        [
          "kneecap",
          "kneecap"
        ]
      ],
      "raw_glosses": [
        "(anatomy) The patella; the kneecap."
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Zoology",
          "orig": "en:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "16 84",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "One of the five radial pieces in the dentary apparatus of the sea urchin."
      ],
      "id": "en-rotula-en-noun-DnFNWvIU",
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "radial",
          "radial"
        ],
        [
          "dentary",
          "dentary"
        ],
        [
          "apparatus",
          "apparatus"
        ],
        [
          "sea urchin",
          "sea urchin"
        ]
      ],
      "raw_glosses": [
        "(zoology) One of the five radial pieces in the dentary apparatus of the sea urchin."
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "rotula"
}

{
  "categories": [
    "English countable nouns",
    "English doublets",
    "English entries with incorrect language header",
    "English learned borrowings from Latin",
    "English lemmas",
    "English nouns",
    "English nouns with irregular plurals",
    "English terms borrowed from Latin",
    "English terms derived from Latin"
  ],
  "derived": [
    {
      "word": "rotular"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "rotula"
      },
      "expansion": "Learned borrowing from Latin rotula",
      "name": "lbor"
    },
    {
      "args": {
        "1": "en",
        "2": "role",
        "3": "roll"
      },
      "expansion": "Doublet of role and roll",
      "name": "dbt"
    }
  ],
  "etymology_text": "Learned borrowing from Latin rotula. Doublet of role and roll.",
  "forms": [
    {
      "form": "rotulas",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "rotulae",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "rotulae"
      },
      "expansion": "rotula (plural rotulas or rotulae)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Skeleton"
      ],
      "glosses": [
        "The patella; the kneecap."
      ],
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "patella",
          "patella"
        ],
        [
          "kneecap",
          "kneecap"
        ]
      ],
      "raw_glosses": [
        "(anatomy) The patella; the kneecap."
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    },
    {
      "categories": [
        "en:Zoology"
      ],
      "glosses": [
        "One of the five radial pieces in the dentary apparatus of the sea urchin."
      ],
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "radial",
          "radial"
        ],
        [
          "dentary",
          "dentary"
        ],
        [
          "apparatus",
          "apparatus"
        ],
        [
          "sea urchin",
          "sea urchin"
        ]
      ],
      "raw_glosses": [
        "(zoology) One of the five radial pieces in the dentary apparatus of the sea urchin."
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "rotula"
}