SG Heritage Dictionary

Sinapis [Noun] Webster's Dictionary 1913

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

Sinapisin [Noun] Webster's Dictionary 1913

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

Sinapism [Noun] Webster's Dictionary 1828

In Pharmacy, a cataplasm composed of mustard seed pulverized, with some other ingredients, and used as an external application. It is a powerful stimulant.

Sinapism [Noun] Webster's Dictionary 1913

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