"lantern slide" meaning in English

{
  "forms": [
    {
      "form": "lantern slides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lantern slide (plural lantern slides)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1939 June, “Items of Interest: Forty Years in Retrospect”, in Railway Magazine, page 467",
          "text": "A large number of interesting lantern slides was shown in conjunction with the lecture.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A slide projected by a magic lantern, an early slide projector."
      ],
      "id": "en-lantern_slide-en-noun-H3FkrLXB",
      "links": [
        [
          "magic lantern",
          "magic lantern"
        ],
        [
          "slide projector",
          "slide projector"
        ]
      ],
      "translations": [
        {
          "code": "ga",
          "lang": "Irish",
          "sense": "slide projected by a magic lantern",
          "tags": [
            "masculine"
          ],
          "word": "sleamhnán laindéir"
        }
      ]
    }
  ],
  "word": "lantern slide"
}

{
  "forms": [
    {
      "form": "lantern slides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lantern slide (plural lantern slides)",
      "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",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1939 June, “Items of Interest: Forty Years in Retrospect”, in Railway Magazine, page 467",
          "text": "A large number of interesting lantern slides was shown in conjunction with the lecture.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A slide projected by a magic lantern, an early slide projector."
      ],
      "links": [
        [
          "magic lantern",
          "magic lantern"
        ],
        [
          "slide projector",
          "slide projector"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "slide projected by a magic lantern",
      "tags": [
        "masculine"
      ],
      "word": "sleamhnán laindéir"
    }
  ],
  "word": "lantern slide"
}