"opera hat" meaning in English

{
  "etymology_text": "From the common practice of storing them in their flattened state under one's seat at the opera.",
  "forms": [
    {
      "form": "opera hats",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "opera hat (plural opera hats)",
      "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": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Headwear",
          "orig": "en:Headwear",
          "parents": [
            "Clothing",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A kind of collapsible top hat."
      ],
      "id": "en-opera_hat-en-noun-zuPes7F5",
      "links": [
        [
          "collapsible",
          "collapsible"
        ],
        [
          "top hat",
          "top hat"
        ]
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "kind of collapsible top hat",
          "tags": [
            "masculine"
          ],
          "word": "chapeau claque"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "kind of collapsible top hat",
          "tags": [
            "masculine"
          ],
          "word": "szapoklak"
        }
      ]
    }
  ],
  "word": "opera hat"
}

{
  "etymology_text": "From the common practice of storing them in their flattened state under one's seat at the opera.",
  "forms": [
    {
      "form": "opera hats",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "opera hat (plural opera hats)",
      "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",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with French translations",
        "Terms with Polish translations",
        "en:Headwear"
      ],
      "glosses": [
        "A kind of collapsible top hat."
      ],
      "links": [
        [
          "collapsible",
          "collapsible"
        ],
        [
          "top hat",
          "top hat"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "kind of collapsible top hat",
      "tags": [
        "masculine"
      ],
      "word": "chapeau claque"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "kind of collapsible top hat",
      "tags": [
        "masculine"
      ],
      "word": "szapoklak"
    }
  ],
  "word": "opera hat"
}