Poultice

Poultice: A soft moist mass about the consistency of cooked porridge that is spread on cloth and applied warm to create moist local heat or counterirritation. As in: "And silence, like a poultice, comes/ To heal the blows of sound" by Oliver Wendell Holmes, Sr. The word poultice derives from the Latin pulta and the Greek poltos, both meaning porridge. Also called a cataplasm.