"monocule" meaning in English

{
  "etymology_text": "See monocular.",
  "forms": [
    {
      "form": "monocules",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "monocule (plural monocules)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "monocle"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Copepods",
          "orig": "en:Copepods",
          "parents": [
            "Crustaceans",
            "Arthropods",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of monocle"
      ],
      "id": "en-monocule-en-noun-LLWX6rGi",
      "links": [
        [
          "monocle",
          "monocle#English"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Alternative form of monocle"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "obsolete"
      ]
    }
  ],
  "word": "monocule"
}

{
  "etymology_text": "See monocular.",
  "forms": [
    {
      "form": "monocules",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "monocule (plural monocules)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "monocle"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with obsolete senses",
        "Pages with 2 entries",
        "Pages with entries",
        "en:Copepods"
      ],
      "glosses": [
        "Alternative form of monocle"
      ],
      "links": [
        [
          "monocle",
          "monocle#English"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Alternative form of monocle"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "obsolete"
      ]
    }
  ],
  "word": "monocule"
}