churn out

churn out idiom
Produce in an abundant and automatic manner, as in He churned out a novel every six months. This idiom transfers the turning of milk into butter to other kinds of production. [Early 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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