"Orbison illusion" meaning in English

{
  "etymology_text": "First described in 1939 by American psychologist William Orbison.",
  "forms": [
    {
      "form": "Orbison illusions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Orbison illusion (plural Orbison illusions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Optical illusions",
          "orig": "en:Optical illusions",
          "parents": [
            "Vision",
            "Senses",
            "Perception",
            "Body",
            "All topics",
            "Fundamental"
          ],
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        }
      ],
      "glosses": [
        "An optical illusion consisting of a two-dimensional figure superimposed over a background of radial lines or concentric circles, resulting in apparent distortion of both the figure and its background."
      ],
      "id": "en-Orbison_illusion-en-noun-8HOwFU0o",
      "links": [
        [
          "optical illusion",
          "optical illusion"
        ]
      ]
    }
  ],
  "word": "Orbison illusion"
}

{
  "etymology_text": "First described in 1939 by American psychologist William Orbison.",
  "forms": [
    {
      "form": "Orbison illusions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Orbison illusion (plural Orbison illusions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
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        "English countable nouns",
        "English entries with incorrect language header",
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        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Optical illusions"
      ],
      "glosses": [
        "An optical illusion consisting of a two-dimensional figure superimposed over a background of radial lines or concentric circles, resulting in apparent distortion of both the figure and its background."
      ],
      "links": [
        [
          "optical illusion",
          "optical illusion"
        ]
      ]
    }
  ],
  "word": "Orbison illusion"
}