n.
A treatment in which evacuated glass cups are applied to intact or scarified skin in order to draw blood toward or through the surface. It was used for disorders associated with an excess of blood, one of the four humors of medieval physiology.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.