(n.) A small book or case for carrying papers, money, etc., in the pocket; also, a notebook for the pocket.

Domesday Book account book address book adversaria album annual appointment calendar appointment schedule bag billfold blankbook blotter calendar cashbook catalog classified catalog commonplace book court calendar daybook desk calendar diary diptych docket engagement book handbag journal ledger log logbook loose-leaf notebook memo book memorandum book memory book money belt money clip notebook pad petty cashbook pocket pocket notebook poke police blotter porte-monnaie purse purse strings scrapbook scratch pad spiral notebook table tablet triptych wallet workbook writing tablet yearbook