account-book Copy link Outline 1. tăbŭlae, arum2. cōdex, ĭcis, m. or codex accepti et expensi3. călendārĭum (esp. a book in which accounts of interest were kept; hence the name from calendae, as interest was payable on the first day of each month)., Sen. • account-book: 1. tăbŭlae, arum: there is a wide difference whether money be deposited in one's box or be among the credits in an a., multum differt in arcane depositum sit argentum an in tabulis debeatur, Cic.: to enter anything in an a., aliquid in tabulas referre, Cic. 2. cōdex, ĭcis, m. or codex accepti et expensi: Cic. 3. călendārĭum (esp. a book in which accounts of interest were kept; hence the name from calendae, as interest was payable on the first day of each month)., Sen.: Dig.