glass jaw

noun

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

Origin of glass jaw

First recorded in 1910–15

Words nearby glass jaw

glass eye, glass fibre, glass gall, glass harmonica, glass is half full, the, glass jaw, glass lizard, glass menagerie, the, glass pox, glass snake, glass string

British Dictionary definitions for glass jaw

glass jaw

noun

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