Chi ishi
鎚石
Hojo undo tool: a concrete or stone weight at the end of a wooden handle. It strengthens the fingers, wrists, forearms, shoulders and chest.
Quick Facts
Term typeEquipment and training aids
LanguageJapanese
Formnoun
Pronunciation[chee ee-shee]
Alternative Namesweight on a handle
Readings and romanizations
Reading (kana)ちいし
Hepburn romanizationchi ishi
Word breakdown
鎚chihammer
石ishistone
Definition
Chi ishi (鎚石) means “hammer stone”. It is an Okinawan hojo undo tool: a wooden handle with a concrete or stone weight at one end. The practitioner holds the handle by its free end and swings, lifts or rotates the weight. Because the weight is far from the hand, even a small mass puts heavy strain on the grip, wrists and forearms. Training with chi ishi also strengthens the shoulders and chest.