glass jaw

American  

noun

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

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glass jaw British  

noun

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

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Etymology

Origin of glass jaw

First recorded in 1910–15

Example Sentences

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

"What happened was Greitens had more of a glass jaw than a lot of people thought," said Steven Law, who runs the Mitch McConnell-aligned super PAC Senate Leadership Fund.

From Salon

They might have class, but they also have a glass jaw.

From BBC

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

From New York Times

City had lost nine games the previous season, its efforts to win a third straight title undone not only by Liverpool’s relentlessness but by its own glass jaw.

From New York Times