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English definition of “churn”

churn

verb     /tʃɜːn/
[I or T] COMMERCE, MARKETING to stop buying the products or services of a particular company, especially in order to buy them from a competitor
[T] STOCK MARKET if stockbrokers churn investments or churn a client's account in order to make more money in commissions, they illegally buy and sell the client's investments more often than necessary: The commission found that he violated the antifraud provisions of the securities laws when he churned three customer accounts.
(Definition of churn verb from the Cambridge Business English Dictionary © Cambridge University Press)
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