from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A medicinal plaster made with a pastelike mixture of powdered black mustard, flour, and water, used especially as a counterirritant. Also called sinapism.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a plaster containing powdered black mustard; applied to the skin as a counterirritant or rubefacient
Sorry, no etymologies found.