a calculus formed in the gall bladder or its ducts
同义词：bilestone
gallstone详细解释
gall.stone n.（名词）A small, hard, pathological concretion, composed chiefly of cholesterol, calcium salts, and bile pigments, formed in the gallbladder or in a bile duct.胆结石：一种在胆囊或胆道中形成的小且硬的病理上的结石，主要由胆固醇、盐酸钙和胆汁色素沉淀组成
