pump iron

pump iron idiom
Lift weights, as in She's started pumping iron three times a week. This idiom was born with the late-20th-century stress on physical fitness. [Second half of 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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