Found 2 items, similar to sinapism.
English → English (WordNet) Definition: sinapism sinapism n : a plaster containing powdered black mustard; applied to the skin as a counterirritant or rubefacient [syn: mustard plaster ]
English → English (gcide) Definition: Sinapism Sinapism \Sin"a*pism\, n. [L. sinapismus, Gr. ????, the use of a mustard blister, fr. ??? to apply a mustard blister, fr. ???? mustard.] (Med.) A plaster or poultice composed principally of powdered mustard seed, or containing the volatile oil of mustard seed. It is a powerful irritant. [1913 Webster]