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glass jaw

American  

noun

  1. a person's jaw, especially that of a boxer, that is vulnerable to even a light blow.


glass jaw British  

noun

  1. informal boxing a jaw that is excessively fragile or susceptible to punches

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of glass jaw

First recorded in 1910–15

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Following defeat in the second Test in Brisbane, McCullum said his team could not have a "glass jaw", while captain Stokes said Australia is "no place for weak men".

From BBC Dec. 22, 2025

But for now it’s the other way around — and the Yankees seem to have a glass jaw.

From New York Times Jun. 27, 2021

This way, Cline hit a series of targets at once: a new emotional window onto the banality of evil; an homage to a literary hero; and a squarely landed blow across the bogeyman’s glass jaw.

From Los Angeles Times Sep. 1, 2020

"America's 'Iron Lady' does not have a glass jaw," Hart told the Journal.

From US News May 5, 2015

It's too bad he's got a glass jaw.

From The Valley of the Moon by London, Jack

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