"round window" meaning in English

{
  "forms": [
    {
      "form": "round windows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "round window (plural round windows)",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Anatomy",
          "orig": "en:Anatomy",
          "parents": [
            "Biology",
            "Medicine",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A membrane-covered opening that leads from the middle ear to the cochlea of the inner ear."
      ],
      "id": "en-round_window-en-noun-F8EAC6Rv",
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "membrane",
          "membrane"
        ],
        [
          "opening",
          "opening"
        ],
        [
          "middle ear",
          "middle ear"
        ],
        [
          "cochlea",
          "cochlea"
        ],
        [
          "inner ear",
          "inner ear"
        ]
      ],
      "raw_glosses": [
        "(anatomy) A membrane-covered opening that leads from the middle ear to the cochlea of the inner ear."
      ],
      "related": [
        {
          "word": "oval window"
        }
      ],
      "synonyms": [
        {
          "word": "cochlear window"
        }
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ],
      "translations": [
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "membrane-covered opening in the ear",
          "word": "kerek ablak"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "membrane-covered opening in the ear",
          "tags": [
            "feminine"
          ],
          "word": "finestra rotonda"
        },
        {
          "code": "kmr",
          "lang": "Northern Kurdish",
          "sense": "membrane-covered opening in the ear",
          "tags": [
            "feminine"
          ],
          "word": "kuna bazneyî"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "membrane-covered opening in the ear",
          "tags": [
            "feminine"
          ],
          "word": "ventana redonda"
        }
      ],
      "wikipedia": [
        "round window"
      ]
    }
  ],
  "word": "round window"
}

{
  "forms": [
    {
      "form": "round windows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "round window (plural round windows)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "oval window"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Anatomy"
      ],
      "glosses": [
        "A membrane-covered opening that leads from the middle ear to the cochlea of the inner ear."
      ],
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "membrane",
          "membrane"
        ],
        [
          "opening",
          "opening"
        ],
        [
          "middle ear",
          "middle ear"
        ],
        [
          "cochlea",
          "cochlea"
        ],
        [
          "inner ear",
          "inner ear"
        ]
      ],
      "raw_glosses": [
        "(anatomy) A membrane-covered opening that leads from the middle ear to the cochlea of the inner ear."
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ],
      "wikipedia": [
        "round window"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "cochlear window"
    }
  ],
  "translations": [
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "membrane-covered opening in the ear",
      "word": "kerek ablak"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "membrane-covered opening in the ear",
      "tags": [
        "feminine"
      ],
      "word": "finestra rotonda"
    },
    {
      "code": "kmr",
      "lang": "Northern Kurdish",
      "sense": "membrane-covered opening in the ear",
      "tags": [
        "feminine"
      ],
      "word": "kuna bazneyî"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "membrane-covered opening in the ear",
      "tags": [
        "feminine"
      ],
      "word": "ventana redonda"
    }
  ],
  "word": "round window"
}