Shuto Uke is a characteristic movement of Karate and is written using two Kanji: 手刀
Shu (手) means hand and To (刀) means knife or sword. The name Shuto Uke either comes from older styles, or only refers to the shape of the hand. In Wado, the Shuto Uke is considered to be Ude Uke. Ude is the Japanese word for arm and implies that Shuto Uke is called Shuto but is done with the arm. Of course, using the shuto is not impossible.
Take note of the position of the arm; elbow down, fingertips up. Generally speaking, your arm should stand up vertically initially and then move horizontally to the outside. As your arm follow this trajectory, the fingertips should remain pointing to the ceiling. Note that this is the case in basic practise. When it comes to application, Shuto itself might be used, the angle may change or it may turn into an attack. The description is a guideline. A key point to use to improve your skill. Be careful not to narrow your mind too much.
The actual Shuto can be used as Uke Waza, but as Uchi Waza as well. This Ippon Kumite is designed so that you can practise Shuto in various ways. It also teaches you how to use Shuto to block and to grab your opponent afterwards.