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A medicinal plaster made with a pastelike mixture of powdered black mustard, flour, and water, used especially as a counterirritant. Also called sinapism.
(Medicine) med a mixture of powdered black mustard seeds and an adhesive agent applied to the skin for its relaxing, stimulating, or counterirritant effects
a preparation of powdered mustard placed on a cloth and applied to the skin as a counterirritant.
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|Noun||1.||mustard plaster - a plaster containing powdered black mustard; applied to the skin as a counterirritant or rubefacient|