jury mast
noun
\ ˈju̇(ə)r-ē-ˌmast
\
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Medical Definition of jury mast
: a device for supporting the head in cases of deterioration of the cervical spine (as in Pott's disease) that consists of a rod one end of which is secured to the back of the body and the other extended above the head to form a hook from which a sling is suspended