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glass jaw

noun

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


glass jaw

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


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Word History and Origins

Origin of glass jaw1

First recorded in 1910–15

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