"correctionist" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "correction",
        "3": "ist"
      },
      "expansion": "correction + -ist",
      "name": "suf"
    }
  ],
  "etymology_text": "correction + -ist",
  "forms": [
    {
      "form": "correctionists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "correctionist (plural correctionists)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ist",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1941, Charlotte G. Wells, The Correction of Foreign Accent, page 34",
          "text": "The correction of barbaralalia (foreign accent) is in the strictest sense speech re-education, since the speech correctionist is aiding the foreign speaker to change one set of speech habits for another.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who corrects something."
      ],
      "id": "en-correctionist-en-noun-5xfpb1rL",
      "links": [
        [
          "correct",
          "correct"
        ]
      ]
    }
  ],
  "word": "correctionist"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "correction",
        "3": "ist"
      },
      "expansion": "correction + -ist",
      "name": "suf"
    }
  ],
  "etymology_text": "correction + -ist",
  "forms": [
    {
      "form": "correctionists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "correctionist (plural correctionists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -ist",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1941, Charlotte G. Wells, The Correction of Foreign Accent, page 34",
          "text": "The correction of barbaralalia (foreign accent) is in the strictest sense speech re-education, since the speech correctionist is aiding the foreign speaker to change one set of speech habits for another.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who corrects something."
      ],
      "links": [
        [
          "correct",
          "correct"
        ]
      ]
    }
  ],
  "word": "correctionist"
}