Real Dictionary

poultice
countable noun: A poultice is a piece of cloth with a soft, often hot, substance such as clay or a mixture of herbs on it. It is put over a painful or swollen part of someone's body in order to reduce the pain or swelling.

poultice in American English
a hot, soft, moist mass, as of flour, herbs, mustard, etc., sometimes spread on cloth, applied to a sore or inflamed part of the body
noun: a soft, moist mass of cloth, bread, meal, herbs, etc., applied hot as a medicament to the body
transitive verb: to apply a poultice to

poultice in British English
noun: a local moist and often heated application for the skin consisting of substances such as kaolin, linseed, or mustard, used to improve the circulation, treat inflamed areas, etc