Nami gaeshi in Shotokan karate refers to a technique where a defender counters an attack by redirecting it with a circular motion, typically using the inside or outside edge of the hand or forearm. The term Nami Gaeshi' translates to 'wave reversal', symbolizing the fluid and dynamic nature of the technique. It involves deflecting the opponent's strike and simultaneously executing a counterattack, emphasizing speed, timing, and precision. Nami gaeshi is commonly practiced in kata (forms) and kumite (sparring) as a fundamental defensive maneuver in Shotokan karate.