/mok"seuh/ , n.
1. a flammable substance or material obtained from the leaves of certain Chinese and Japanese wormwood plants, esp. Artemisia moxa.
2. this substance or a similar one of cotton, wool, or the like, placed on the skin usually in the form of a cone or cylinder and ignited for use as a counterirritant.
[ 1670-80; by uncert. mediation mogusa, equiv. to mo ( y ) e burn + -gusa, comb. form of kusa herb ]