1)X is a slipper made of deerskin or other soft leather, consisting of a sole and sides made of one piece of leather, stitched together at the top, and sometimes with a vamp (additional panel of leather). The sole is soft and flexible and the upper part often is adorned with embroidery or beading, et cetera. Historically, it is the footwear of many Native American peoples; moreover, hunters, traders, and European settlers. Name X. The shoe major BATA has its version in the modern market. 2) It has a vertical angular momentum vector, stabilizing its attitude gyroscopically . Depending on the cross-sectional shape of the airfoil the amount of lift generated by the front and back parts of the disc may be unequal. If the disc were not spinning this would tend to make it pitch . When the disc is spinning, however, such a torque would cause it to precess about the roll axis, causing its trajectory to curve to the left or the right. It was earlier called the Whirlo-W...