frisbee · noun, verb1
By genericization from the trademark Frisbee.
Frisbee · proper noun, noun, verb2
1957, brand name Frisbee was trademarked in 1959 by Fred Morrison, later acquired by Wham-O. From an alteration of frisbie, applied to the disk game by U.S. college students who tossed pie plates from Mrs. Frisbie's Pies, Frisbie Bakery, Bridgeport Ct., since the 1930s. From the English family name Frisbie, Frisby attested 1226, from the toponym attested 1086 in Frisby on the Wreak, Leicestershire, from Old Danish Frisby (“Frisian village”).
Etymology from Wiktionary, CC BY-SA 4.0.