il boomerang

A boomerang is a thrown tool typically constructed with airfoil sections and designed to spin about an axis perpendicular to the direction of its flight, designed to return to the thrower. The origin of the word is from an Aboriginal Australian language of the Sydney region. Its original meaning, which is preserved in official competitions, refers only to returning objects, not to throwing sticks, which were also used for hunting by various peoples both in Australia and around the world. However, the term "non-returning boomerang" is also in general use.