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jury-mast(jūr′ē-măst) [L. jurare, to be right, + AS. masc, a stick]
An apparatus for support of the head in diseases of the spine.
Medical Dictionary, © 2009 Farlex and Partners
jury-mastAn upright bar incorporated into a Plaster of Paris jacket and used as a head support in the treatment of spinal disease.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005