break the back of

break the back of idiom
Overpower, overcome; also, get through the hardest part of. For example, This new offense has broken the back of the opposing team, or We're well over halfway there; we've broken the back of this journey. [Mid-1800s]

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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