white mustard
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white mus·tard
the ripe seeds of Brassica hirta; less pungent than black mustard, but with sinalbin, myrosin salts, glucose, and oils. Traditionally considered a digestive irritant and stimulant.
white mustard
Herbal medicineAn annual plant primarily used as a seasoning, but which may be used topically as a plaster for minor pain.
Toxicity
If left in place for too long, mustard plasters may cause vesication.