(plural nerf balls) ™
- (Trademark owned by Hasbro corporation) Any small foam ball, soft and very light, designed for indoor use.
- Getting hit by a Nerf® ball doesn't hurt at all.
- This mini nerf ball whistles when thrown hard and flies really well. Unlike its bigger brother, this Vortex Nerf ball is much softer and lighter, perfect for kids
Like many trademarked terms, this term is also used generically in common speech. However, Hasbro would prefer that it always be capitalized in written text, and a trademark notice added.