mustard plaster

Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

mustard plaster

Med a mixture of powdered black mustard seeds and an adhesive agent applied to the skin for its relaxing, stimulating, or counterirritant effects

Mustard Plaster


a sheet of thick paper covered with a thin layer of defatted, dried, and powdered seeds of black or Indian mustard. Its active ingredients are the volatile mustard oil and the phytoncides released when water reacts with the enzyme myrosin, which is contained in mustard. Mustard plasters are used as irritants and revulsants in the treatment of bronchitis, lung inflammations, and muscular pains.

References in periodicals archive ?
As for the treatment of the common cold in my day, it may have been more merciful than the mustard plaster, but still there were hazards.
Food retailers must sell more than simple mustard plasters and alcohol rubs to satisfy today's shoppers looking for topical pain relief.
Ygnacio turns his daughter over, instead, to lesser quacks, who stick on leeches, scald her with mustard plasters, bathe her in urine and cause her to suffer those very convulsions and deliriums symptomatic equally of rabies and of madness, just as prophetic speech and levitation were evidence at the time, equally, of demonic possession and of sainthood.