While I agree that the item is ordinarily called a "three-ring binder", and that...

		thaumasiotes on July 19, 2021 \| parent \| context \| favorite \| on: Chernobyl's 'stalker' subculture While I agree that the item is ordinarily called a "three-ring binder", and that it always has three rings, I would not call one with a strange number of rings a "three-ring binder". The name hasn't become that opaque.

And a "ring binder" sounds like something else.