釵さいMeanings1nounsai (Okinawan weapon)A traditional Okinawan weapon, a metal truncheon with two short side prongs. Used in martial arts such as kobudo.沖おき縄なわの古こ武ぶ道どうでは、釵さいの使つかい方かたを学まなぶ。In Okinawan kobudo, one learns how to use the sai.