SINAPIS NIGRA
\sˈɪnɐpˌiz nˈɪɡɹə], \sˈɪnɐpˌiz nˈɪɡɹə], \s_ˈɪ_n_ɐ_p_ˌi_z n_ˈɪ_ɡ_ɹ_ə]\
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Black (or brown, or red) mustard. The seeds, the S. nigra of the U. S. Ph., yield by distillation with water mustard oil. Black mustard is chiefly used as a rubefacient in sinapisms. The flour is often used as an emetic. The volatile oil is also a powerful rubefacient. [Gr.]
By Smith Ely Jelliffe
