ShidōinShidōin is a Japanese title, often used in Japanese martial arts.MeaningThe word Shidōin means "instructor" or "teacher" and is typically used as an honorific title to identify an intermediate level instructor within an organization or budo dojo. By comparison, an assistant instructor or teacher would have the title Fuku Shidoin, while a senior instructor would have the title Shihan, meaning "leader", "guide" or "ideal".OriginThe word descends from Shido 指導. It consists of yubi 指 what means finger or sasu 指す which is the verb for showing. Michibiku 導 means guide or lead. Shido also stands for chivalry, the code of honor of the samurai.UseDifferent budo arts and dojos have their own requirements for how this title is used, but typically it corresponds to 4th or 5th Dan.