"lightguide" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "light",
        "3": "guide"
      },
      "expansion": "light + guide",
      "name": "compound"
    }
  ],
  "etymology_text": "light + guide",
  "forms": [
    {
      "form": "lightguides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lightguide (plural lightguides)",
      "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",
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015, Dominika Alfs, “Test of Lightguides for the J-PET Detector”, in arXiv",
          "text": "It was proven that the insertion of the thin lightguide does not spoil the time resolution and the light output.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A waveguide used to guide light"
      ],
      "id": "en-lightguide-en-noun-RcYrFLte",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "waveguide",
          "waveguide"
        ],
        [
          "guide",
          "guide"
        ],
        [
          "light",
          "light"
        ]
      ],
      "raw_glosses": [
        "(physics) A waveguide used to guide light"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "lightguide"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "light",
        "3": "guide"
      },
      "expansion": "light + guide",
      "name": "compound"
    }
  ],
  "etymology_text": "light + guide",
  "forms": [
    {
      "form": "lightguides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lightguide (plural lightguides)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "en:Physics"
      ],
      "examples": [
        {
          "ref": "2015, Dominika Alfs, “Test of Lightguides for the J-PET Detector”, in arXiv",
          "text": "It was proven that the insertion of the thin lightguide does not spoil the time resolution and the light output.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A waveguide used to guide light"
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "waveguide",
          "waveguide"
        ],
        [
          "guide",
          "guide"
        ],
        [
          "light",
          "light"
        ]
      ],
      "raw_glosses": [
        "(physics) A waveguide used to guide light"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "lightguide"
}