A clump or wad of swallowed food or hair. Bezoars can block the digestive system, especially the exit of the stomach. A bezoar composed of hair is called a trichobezoar. A bezoar composed of vegetable materials is called a phytobezoar. A bezoar composed of hair and food is called a trichophytobezoar.

late 15c., ultimately from Arabic bazahr, from Persian pad-zahr "counter-poison," from pad "protecting, guardian, master" (from Iranian *patar-, source also of Avestan patar-, from [..]

a small hard, solid mass which may form in the stomachs of animals such as goats or sheep

hard, indigestable mass found in the stomach of certain animals.

Stone taken from the stomach of a goat. A bezoar will counteract the majority of poisons.

a counter-poison or antidote, especially a stony calculus from an animal's stomach. [Mayow]

Concretions of swallowed Hair, Fruit or vegetable fibers, or similar substances found in the alimentary canal.

Some chemical compounds, such as sulfur auretum when mixed with either red mercuric oxide or black antimony, clump together inseparably as soon as they are mixed together. The alchemists considered su [..]

A mass, usually of hair or undigested vegetable matter, found in an animal's intestines; a hairball. An enterolith.