1) Calculus 2) Concretion 
An enterolith is a mineral concretion or calculus formed anywhere in the gastrointestinal system. Enteroliths are uncommon and usually incidental findings but, once found, they require at a minimum watchful waiting. If there is evidence of complications, they must be removed. An enterolith may form around a nidus, a small foreign object such as a ...
• (n.) An intestinal concretion.
(en´tәr-o-lith″) a calculus in the intestine; called also intestinal calculus.
En'ter·o·lith noun [ Greek 
Type: Term Pronunciation: en′tĕr-ō-lith′ Definitions: 1. An intestinal calculus formed of layers of soaps and earthy phosphates surrounding a nucleus of some hard body such as a swallowed fruit stone or other indigestible substance.
Stony concretion that develops in the large intestine
[n] - a calculus occurring in the intestines
noun a calculus occurring in the intestines