"idu" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ko",
        "3": "이두"
      },
      "expansion": "Korean 이두 (idu)",
      "name": "bor"
    }
  ],
  "etymology_text": "Romanization of Korean 이두 (idu).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "idu (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "itwu"
        }
      ],
      "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 10 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative spelling of itwu."
      ],
      "id": "en-idu-en-noun-4LwmCTvX",
      "links": [
        [
          "itwu",
          "itwu#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "uncountable"
      ]
    }
  ],
  "word": "idu"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ko",
        "3": "이두"
      },
      "expansion": "Korean 이두 (idu)",
      "name": "bor"
    }
  ],
  "etymology_text": "Romanization of Korean 이두 (idu).",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "idu (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "itwu"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms borrowed from Korean",
        "English terms derived from Korean",
        "English uncountable nouns",
        "Pages with 10 entries",
        "Pages with entries"
      ],
      "glosses": [
        "Alternative spelling of itwu."
      ],
      "links": [
        [
          "itwu",
          "itwu#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "uncountable"
      ]
    }
  ],
  "word": "idu"
}