binder; ring binder
A stationery item with rings or clips for holding loose sheets of paper.
I file the documents in a binder.
clipboard
A flat board with a clip at the top for holding papers, often used for writing while standing.
The surveyor clipped a form onto a clipboard and took notes.
binder; binding machine
Agricultural machine that cuts and ties grain stalks into bundles. Less common in everyday conversation.
In the past, they used a binder to cut and bundle rice stalks.