Forgotten English -- cramp-ring

"A ring made of the hinge of a coffin is supposed to have the virtue of preventing the cramp."
-- Francis Grose's Provincial Glossary, 1787

[From: Jeffrey Kacirk Forgotten English 2008 Calendar: A Calendar of Vanishing Vocabulary and Folklore]

Enjoy finding out about new things that you're going to have to figure out how to get made for yourself someday,

Bp