A device which binds together sheets of paper by driving a thin metal staple through the sheets and simultaneously folding over the ends of the staple against the back surface of the paper.

(dated) A dealer in staple goods. / (dated) One employed to sort wool according to its staple.

plural of stapler

A woolsorter

plural of wool stapler

plural of saddle stapler

A long stapler used in bookbinding to insert staples into the spine of a catalogue, brochure, etc., and having a V-shaped hump or "saddle" for precise alignment with the central fold.