through the mill, to go/to be put
go through the mill
To be abused or treated very harshly; to suffer intense anguish, stress, or grief. I went through the mill as a kid in high school. I couldn't get out of there fast enough. The coach was renowned for his strict practice regimen, and his players went through the mill to become the toughest in the state.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
put someone through the wringer
Fig. to give someone a difficult time; to interrogate someone thoroughly. (Alludes to putting something through an old-fashioned clothes wringer.) The lawyer really put the witness through the wringer! The teacher put the students through the wringer.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
go through the mill
If you go through the mill, you experience a very difficult period in your life with many problems. She's been through the mill these last few years — the collapse of her marriage and her career and a serious illness on top of that. It's been an incredibly tough tour and we have all been through the mill. Note: You can also say that something or someone puts someone through the mill. Following the England side over the years, I have been put through the mill emotionally. Note: The reference here is to grain passing through a mill and being made into flour.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
go (or put someone) through the mill
undergo (or cause someone to undergo) an unpleasant experience.Farlex Partner Idioms Dictionary © Farlex 2017
put (someone) through the wringer
Slang To subject to a severe trial or ordeal.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
through the mill, to go/to be put
To undergo hardship or rough treatment. The analogy here is to being ground down like grain. The figurative use of the term dates from the nineteenth century. “We’ve all passed through that mill,” wrote Rolf Bolderwood (A Colonial Reformer, 1890). A newer synonymous phrase, dating from the mid-1900s, is to put someone through the wringer, alluding to a wringer that squeezes moisture out of something. For example, “When they suspect child abuse, the police really put parents through the wringer.”
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer