Uchi Sune Uke is a technique in Kyokushin karate. It translates to 'Inside Shin Block.' This technique involves blocking an incoming attack with the inner part of the shin. The term 'Uchi' refers to inside, 'Sune' indicates shin, and 'Uke' denotes block. It is commonly used to defend against low kicks or strikes aimed at the lower body, providing a solid barrier while minimizing the risk of injury to the defender's limbs.