 Complete the following phrase:  In martial arts, a waster is a practice weapon, usually a sword, and usually made out of wood, though nylon plastic wasters are also available. The use of wood or nylon instead of metal provides an economic and safe option for initial weapons training and sparring, at some loss of genuine experience. A weighted waster may be used for a sort of strength training, making the movements of using an actual sword comparatively easier and quicker. Wasters as wooden practice weapons have been found in a variety of cultures over a number of centuries, including ancient China, Ireland, Iran, Scotland, Rome, Egypt, medieval and 