Pieced. Any space on the cover of a book which has a piece of another material attached to it. Most often used to mean leather which is used as labels for titles; also called titled.
Plate. 1. Illustration printed from a plate. The term is often used incorrectly for wood cuts. 2. In library usage any full-page illustration not paged-in.
Plough. A tool used for trimming books.
Pluviusin. An imitation leather made in England.
Pocket. An envelope made of paper or cardboard generally attached to the inside of the back cover and used to hold loose maps or plates. See also Book pocket.
Pointillé style. A form of decoration in which the design is marked with small dots or points.
Points. Holes made in sheets during the process of printing which serve as guides in registering and folding.
Polisher. A steel tool used to give a gloss to leather after finishing.
Portfolio. A case made for holding loose plates or maps.
Powder, Semé. A form of decoration in which a small figure is repeated regularly.