Spreadeagle (position)

Use of spread eagle during skydiving
Jeffrey Buttle does an inside spread eagle at the 2004 Four Continents Championships in Hamilton

The spreadeagle (also spelled spread eagle or spread-eagle) is the position in which a person has their arms outstretched and legs apart, figuratively resembling an eagle with wings spread. It is a style that appears commonly in nature and geometry. In human style, it is represented by the letter "X".