"IWW" meaning in English

{
  "head_templates": [
    {
      "args": {},
      "expansion": "IWW",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Industrial Workers of the World"
      ],
      "id": "en-IWW-en-name-TunWSqcF",
      "qualifier": "labor union",
      "raw_glosses": [
        "(US, labor union) Industrial Workers of the World"
      ],
      "synonyms": [
        {
          "word": "Wobblies"
        }
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "word": "IWW"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "IWW",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "American English",
        "English entries with incorrect language header",
        "English lemmas",
        "English proper nouns",
        "English uncountable nouns"
      ],
      "glosses": [
        "Industrial Workers of the World"
      ],
      "qualifier": "labor union",
      "raw_glosses": [
        "(US, labor union) Industrial Workers of the World"
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Wobblies"
    }
  ],
  "word": "IWW"
}