"optical fiber" meaning in English

{
  "forms": [
    {
      "form": "optical fibers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
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      "expansion": "optical fiber (countable and uncountable, plural optical fibers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "optical fibre"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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        {
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      ],
      "glosses": [
        "Alternative form of optical fibre"
      ],
      "id": "en-optical_fiber-en-noun-lXDG~7Al",
      "links": [
        [
          "optical fibre",
          "optical fibre#English"
        ]
      ],
      "raw_glosses": [
        "(American spelling) Alternative form of optical fibre"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "optical fiber"
}

{
  "forms": [
    {
      "form": "optical fibers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "optical fiber (countable and uncountable, plural optical fibers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "optical fibre"
        }
      ],
      "categories": [
        "American English forms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Alternative form of optical fibre"
      ],
      "links": [
        [
          "optical fibre",
          "optical fibre#English"
        ]
      ],
      "raw_glosses": [
        "(American spelling) Alternative form of optical fibre"
      ],
      "tags": [
        "US",
        "alt-of",
        "alternative",
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "optical fiber"
}