Glass jaw:
A jaw vulnerable to a blow, such as an uppercut from a boxer. Glass jaw is a phenomenon recognized not only by screen-writers of films such as ‘Rocky’, but also by boxing trainers and other sports coaches. A person with a glass jaw is relatively easy to knock out and is more likely to sustain a fracture from a blow to the jaw.
A colloquial term used to describe the susceptibility of an athlete, especially a boxer, to be knocked out or sustain a fracture of the mandible from a blow to the jaw.
In my experience it applies to guys with a slack jaw, loose mouthguards, low, or "open" guard (hand position) as well as a tendency to fracture, crack, chip or dislocate the actual bone or connective tissues.
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"In all countries where personal freedom is valued, however much each individual may rely on legal redress, the right of each to carry arms - and these the best and the sharpest - for his own protection in case of extremity, is a right of nature indelible and irrepressible, and the more it is sought to be repressed the more it will recur."
James Paterson |