Webster’s Revised Unabridged Dictionary · 1913
Cataplasm
Cat′a·plasm (kăt′ȧ·plăz'm), n. [L. cataplasma, Gr. κατάπλασμα, fr. καταπλάσσειν to spread over; κατά down, wholly + πλάσσειν to form, mold.] (Med.) A soft and moist substance applied externally to some part of the body; a poultice. Dunglison.