n.
A small, hard, pathological concretion, composed chiefly of cholesterol, calcium salts, and bile pigments, formed in the gallbladder or in a bile duct.
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.
