Definition of "paper mill"

paper mill

noun
plural paper mills
1. A factory devoted to making paper from wood pulp and other ingredients.
2. An organization that unethically sells pre-written papers to students.
  Quotations
  Similarly, buying papers from paper mills, or paying for someone else to write a paper, is obviously dishonest and is a clear example of plagiarizing.
  2010, Rosemarie Menager, Lyn Paulos, Quick Coach Guide to Avoiding Plagiarism, page 13
3. An organization that produces large volumes of poor-quality or forged research papers.
  Quotations
  Advances in artificial intelligence (AI) are complicating publishers’ efforts to tackle the growing problem of paper mills — companies that produce fake scientific papers to order.
  2023 May 31, Layal Liverpool, “AI intensifies fight against ‘paper mills’ that churn out fake research”, in Nature‎