a circular disk more than 7 inches (18 cm) in diameter and 2.2 pounds (1 kg) in weight, usually wooden with a metal rim and thicker in the center than at the edge, for throwing for distance in athletic competition.
2.
the sport of throwing this disk for distance.
Origin
1650-60; < Latin < Greekdískos a quoit, discus, disk, derivative of diskeîn to throw