folio

n.A single leaf in a book or a manuscript.A number assigned to a leaf, typically to represent order.A book size made from sheets2 folded in half.A bill of accounts, especially for guests in a hotel.Two facing pages used to record information about a single account.LawA number of words used as a measure in legal documents; in the United States, 100 words, in England, 72 or 90 words.