"museum piece" meaning in English

{
  "etymology_text": "Referring to the preservation of historic artifacts in museums.",
  "forms": [
    {
      "form": "museum pieces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "museum piece (plural museum pieces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "73 27",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
        },
        {
          "_dis": "75 25",
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        {
          "_dis": "76 24",
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        {
          "_dis": "88 12",
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        },
        {
          "_dis": "70 30",
          "kind": "other",
          "name": "Terms with Czech translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "77 23",
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "85 15",
          "kind": "topical",
          "langcode": "en",
          "name": "Museums",
          "orig": "en:Museums",
          "parents": [
            "Art",
            "Businesses",
            "Tourism",
            "Culture",
            "Business",
            "Travel",
            "Society",
            "Economics",
            "Human activity",
            "Transport",
            "All topics",
            "Social sciences",
            "Human behaviour",
            "Fundamental",
            "Sciences",
            "Human"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1950 October, H. C. Casserley, “Locomotive Cavalcade, 1920-1950—4”, in Railway Magazine, page 660:",
          "text": "These excursions proved popular, and it is, perhaps, not too much to hope that British Railways will revive the idea, and use museum pieces to stage exhibitions of trains of bygone days.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An item worthy of being kept by a museum."
      ],
      "id": "en-museum_piece-en-noun-AjUk32W6"
    },
    {
      "categories": [],
      "examples": [
        {
          "text": "Jim's car is a real museum piece.",
          "type": "example"
        },
        {
          "text": "A Sinclair Spectrum computer is now just a museum piece.",
          "type": "example"
        }
      ],
      "glosses": [
        "A very old item, especially an obsolete piece of technology."
      ],
      "id": "en-museum_piece-en-noun-no31UbLD",
      "links": [
        [
          "obsolete",
          "obsolete"
        ],
        [
          "technology",
          "technology"
        ]
      ],
      "raw_glosses": [
        "(slang) A very old item, especially an obsolete piece of technology."
      ],
      "tags": [
        "slang"
      ],
      "translations": [
        {
          "_dis1": "32 68",
          "code": "cs",
          "lang": "Czech",
          "sense": "old item",
          "word": "muzeální kousek"
        },
        {
          "_dis1": "32 68",
          "code": "de",
          "lang": "German",
          "sense": "old item",
          "tags": [
            "neuter"
          ],
          "word": "Museumsstück"
        }
      ]
    }
  ],
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      "audio": "En-au-museum piece.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8e/En-au-museum_piece.ogg/En-au-museum_piece.ogg.mp3",
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  "word": "museum piece"
}

{
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    "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 Czech translations",
    "Terms with German translations",
    "en:Museums"
  ],
  "etymology_text": "Referring to the preservation of historic artifacts in museums.",
  "forms": [
    {
      "form": "museum pieces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "museum piece (plural museum pieces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1950 October, H. C. Casserley, “Locomotive Cavalcade, 1920-1950—4”, in Railway Magazine, page 660:",
          "text": "These excursions proved popular, and it is, perhaps, not too much to hope that British Railways will revive the idea, and use museum pieces to stage exhibitions of trains of bygone days.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An item worthy of being kept by a museum."
      ]
    },
    {
      "categories": [
        "English slang",
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "Jim's car is a real museum piece.",
          "type": "example"
        },
        {
          "text": "A Sinclair Spectrum computer is now just a museum piece.",
          "type": "example"
        }
      ],
      "glosses": [
        "A very old item, especially an obsolete piece of technology."
      ],
      "links": [
        [
          "obsolete",
          "obsolete"
        ],
        [
          "technology",
          "technology"
        ]
      ],
      "raw_glosses": [
        "(slang) A very old item, especially an obsolete piece of technology."
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-museum piece.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8e/En-au-museum_piece.ogg/En-au-museum_piece.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/8e/En-au-museum_piece.ogg"
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  ],
  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "old item",
      "word": "muzeální kousek"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "old item",
      "tags": [
        "neuter"
      ],
      "word": "Museumsstück"
    }
  ],
  "word": "museum piece"
}