Zuciøh

Zuciøh (磁石 magnetite) / huiciøh (瓷石^‡)

a mineral used in traditional Chinese medicine to calm the mind / magnet
"tzhu shih" (císhí) in Mandarin, "loving stone", possibly originally written as 慈石 (also zuciøh; lit. loving stone) in earlier times, compare to French aimant