The Collaborative International Dictionary
Tripestone
Tripestone \Tripe"stone`\ (tr[imac]p"st[=o]n`), n. (Min.) A variety of anhydrite composed of contorted plates fancied to resemble pieces of tripe.
Wiktionary
tripestone
n. (context mineralogy English) A variety of anhydrite composed of contorted plates, supposed to resemble pieces of tripe.