"confectioners' sugar" meaning in English

{
  "head_templates": [
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      "args": {
        "1": "-",
        "head": "confectioners' sugar"
      },
      "expansion": "confectioners' sugar (uncountable)",
      "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",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Northern US English",
          "parents": [],
          "source": "w"
        },
        {
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          "name": "Pages with 1 entry",
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          "source": "w"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Southern US English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sugars",
          "orig": "en:Sugars",
          "parents": [
            "Carbohydrates",
            "Organic compounds",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
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      ],
      "glosses": [
        "Powdered sugar."
      ],
      "id": "en-confectioners'_sugar-en-noun-mEHofuTM",
      "links": [
        [
          "Powdered sugar",
          "powdered sugar"
        ]
      ],
      "raw_glosses": [
        "(Northern US, Southern US) Powdered sugar."
      ],
      "synonyms": [
        {
          "word": "confectioners sugar"
        }
      ],
      "tags": [
        "Northern-US",
        "Southern-US",
        "uncountable"
      ]
    }
  ],
  "word": "confectioners' sugar"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "confectioners' sugar"
      },
      "expansion": "confectioners' sugar (uncountable)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English lemmas",
        "English multiword terms",
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        "Pages with 1 entry",
        "Pages with entries",
        "Southern US English",
        "en:Sugars"
      ],
      "glosses": [
        "Powdered sugar."
      ],
      "links": [
        [
          "Powdered sugar",
          "powdered sugar"
        ]
      ],
      "raw_glosses": [
        "(Northern US, Southern US) Powdered sugar."
      ],
      "tags": [
        "Northern-US",
        "Southern-US",
        "uncountable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "confectioners sugar"
    }
  ],
  "word": "confectioners' sugar"
}