One sheet of paper in a publication. Each side of a leaf is one page.<br><br>Metal beaten into extremely thin sheets used especially for gilding. Leaf is traditionally made of gold or silver, but may be made of other metals, including aluminum, copper, and other less expensive ones which look like gold and silver. In a book, a leaf is a sheet of paper with, front-to-back (recto-to-verso), two pages.Also see a chart of jewelry, ormolu, signature, and steel sheet gauges.