mustard plaster

English Thesaurus

1. a plaster containing powdered black mustard; applied to the skin as a counterirritant or rubefacient (noun.artifact)

hypernym	:	cataplasm, plaster, poultice,
definition	:	a medical dressing consisting of a soft heated mass of meal or clay that is spread on a cloth and applied to the skin to treat inflamed areas or improve circulation etc. (noun.artifact)