I.a debt-book, account-book, the interest-book of a money-lender, because monthly interest was reckoned to the Kalends: “nemo beneficia in Kalendario scribit,” Sen. Ben. 1, 2, 3: “versare,” id. Ep. 14, 18: “quid fenus et Kalendarium et usura, nisi humanae cupiditatis extra naturam quaesita nomina,” id. Ben. 7, 10, 3; Orig. 12, 1, 41; 15, 1, 58 al.; “also called Kalendarii liber,” Sen. Ep. 87, 7. —
II. Trop.: “graciles aurium cutes Kalendarium expendunt,” i. e. a fortune, a whole estate, Tert. Hab. Mul. 1, 9 fin.