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A disused generic name for mustard; -- now called Brassica.

A substance extracted from mustard seed and probably identical with sinalbin. [Obs.]

A plaster or poultice composed principally of powdered mustard seed, or containing the volatile oil of mustard seed. It is a powerful irritant.

urface, excites action in the part to which it is applied, as a blister, an epispastic, a sinapism.

A cruciferous plant (Brassica sinapistrum) with yellow flowers; wild mustard. It is troublesome in grain fields. Called also chardock, chardlock, chedlock, and kedlock. Jointed charlock, White charlock, a troublesome weed (Raphanus Raphanistrum) with straw- colored, whitish, or purplish flowers, and jointed pods: wild…

A mild vesicatory; a sinapism; as, to apply draughts to the feet.

To have efficiency as an epispastic; to act as a sinapism; -- said of a blister, poultice, etc.

The name of several cruciferous plants of the genus Brassica (formerly Sinapis), as white mustard (B. alba), black mustard (B. Nigra), wild mustard or charlock (B. Sinapistrum).

A glucoside found in the seeds of white mustard (Brassica alba, formerly Sinapis alba), and extracted as a white crystalline substance.

A glucoside found in the seeds of black mustard (Brassica nigra, formerly Sinapis nigra) It resembles sinalbin, and consists of a potassium salt of myronic acid.

A kind of mustard (Sinapis alba) with rough-hairy foliage, a long-beaked hispid pod, and pale seeds, which yield mustard and mustard oil. The plant is also grown for forage.