Kalendārium (Cal-), ii, n. id., 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.

— Trop.: graciles aurium cutes Kalendarium expendunt, i. e. a fortune, a whole estate, Tert. Hab. Mul. 1, 9 fin.