1. Zen stick (used by a Zen priest to strike an inattentive zazen sitter); warning stick (Rinzai Zen); encouragement stick (Soto Zen)Abbreviation, See also 警覚策励, See also 座禅, called けいさく in Rinzai Zen, きょうさく in Soto Zen
Noun
2. horsewhipOnly applies to けいさく
Wikipedia definition
3. KeisakuIn Zen Buddhism, the keisaku is a flat wooden stick or sl... Read more