a poultice, often medicated
Origin of cataplasmFrench from Late Latin cataplasma from Classical Greek kataplasma: see cata- and plasma
Origin of cataplasmMiddle English cathaplasma French cataplasme both from Latin cataplasma from Greek kataplasma from kataplassein to plaster over kata- down, onto, over ; see cata- . plassein to mold, form ; see plasma .
From Latin cataplasma, from Ancient Greek κατάπλασμα (katáplasma).