Sinapism

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Sinapism \Sin"a*pism\, n. [L. sinapismus, Gr. ????, the use of a
     mustard blister, fr. ??? to apply a mustard blister, fr. ????
     mustard.] (Med.)
     A plaster or poultice composed principally of powdered
     mustard seed, or containing the volatile oil of mustard seed.
     It is a powerful irritant.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  sinapism
       n : a plaster containing powdered black mustard; applied to the
           skin as a counterirritant or rubefacient [syn: {mustard
           plaster}]