The Vietnamese word "ném đĩa" translates to "discus throw" in English. It refers to a track and field event where an athlete throws a heavy disc, called a discus, as far as possible. This sport is one of the events in athletics competitions, including the Olympics.
While "ném đĩa" primarily refers to the sport, in informal contexts, it could also refer to the act of throwing any flat object in a disc-like shape, but this usage is less common.