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
Seen and Heard
What made you want to look up jury mast? Please tell us where you read or heard it (including the quote, if possible).