Aerobie
/ɛːˈrəʊbi/originally US
noun
A trademark for: a thin plastic ring which is spun through the air, like a Frisbee, in a catching game.
Origin
1980s; earliest use found in The Christian Science Monitor. From aero- + -bee, with alteration of the ending perhaps to avoid confusion with Aerobee, trademark in the United States for a kind of rocket.