A flying disc[1] is a round object with a flat shape and a thick rim. The rim helps with gripping and throwing the disc, and it also prevents it from flipping over while in the air. To throw the disc, the goal is to make it spin while it's in flight.
There is another[2] type of flying object called a flying ring, which is sold under the brand name Aerobie. Although they have different designs, both flying discs and flying rings rely on air resistance to fly.
Flying discs are used in two popular sports, Ultimate Frisbee and Disc Golf. The Frisbee brand of flying disc is not commonly used in official competitions for these sports. In fact, the team sport of Ultimate Frisbee is officially known as "Ultimate." However, the term "Frisbee" is still widely used to refer to any flying disc, just like "Kleenex" was once used to mean "facial tissue."