Wiktionary
n. (context athletics English) An athletic throwing event where the object to be thrown is a heavy lenticular disc called discus.
Wikipedia
The discus throw is a track and field event in which an athlete throws a heavy disc—called a discus—in an attempt to mark a farther distance than their competitors. It is an ancient sport, as demonstrated by the fifth-century-B.C. Myron statue, Discobolus. Although not part of the modern pentathlon, it was one of the events of the ancient Greek pentathlon, which can be dated back to at least to 708 BC.
Usage examples of "discus throw".
He had kept ahead in all the earlier run-offs for the discus throw.
Had Odysseus not participated in and won the discus throw, he would not have been invited to the palace of Alcinous and been given the gifts that proved so important on his journey home.